diff --git a/common/models/user.json b/common/models/user.json
index 1cb7a4d203..c3cb375b11 100644
--- a/common/models/user.json
+++ b/common/models/user.json
@@ -108,7 +108,7 @@
     "resetPasswordExpires": "string",
     "uncompletedBonfires": "array",
     "completedBonfires": [{
-      "_id": "string",
+      "id": "string",
       "name": "string",
       "completedWith": "string",
       "completedDate": "string",
@@ -120,7 +120,7 @@
         "type": "string",
         "defaultFn": "now"
       },
-      "_id": "string",
+      "id": "string",
       "name": "string",
       "completedWith": "string",
       "solution": "string",
@@ -152,7 +152,7 @@
     "completedChallenges": {
       "type": [{
         "completedDate": "number",
-        "_id": "string",
+        "id": "string",
         "name": "string",
         "completedWith": "string",
         "solution": "string",
diff --git a/public/js/main_0.0.2.js b/public/js/main_0.0.2.js
index b9a89d982f..b4b21f6c31 100644
--- a/public/js/main_0.0.2.js
+++ b/public/js/main_0.0.2.js
@@ -272,7 +272,7 @@ $(document).ready(function() {
   });
 
   var upvoteHandler = function () {
-    var _id = storyId;
+    var id = storyId;
     $('#upvote').unbind('click');
     var alreadyUpvoted = false;
     for (var i = 0; i < upVotes.length; i++) {
@@ -285,7 +285,7 @@ $(document).ready(function() {
       $.post('/stories/upvote',
         {
           data: {
-            id: _id
+            id: id
           }
         })
         .fail(function (xhr, textStatus, errorThrown) {
diff --git a/seed/challenge-migration.js b/seed/challenge-migration.js
index 6109f7775b..5c8fd01590 100644
--- a/seed/challenge-migration.js
+++ b/seed/challenge-migration.js
@@ -40,7 +40,7 @@ MongoClient.connect(oldUri, function(err, database) {
           })
           .map(function(key) {
             return({
-              _id: coursewares[key].id,
+              id: coursewares[key].id,
               completedDate: user.challengesHash[key]
             });
           });
diff --git a/seed/challenges/advanced-bonfires.json b/seed/challenges/advanced-bonfires.json
index eefd2d60ff..2ee30908a0 100644
--- a/seed/challenges/advanced-bonfires.json
+++ b/seed/challenges/advanced-bonfires.json
@@ -3,7 +3,7 @@
   "order": 0.011,
   "challenges": [
     {
-      "_id": "aff0395860f5d3034dc0bfc9",
+      "id": "aff0395860f5d3034dc0bfc9",
       "name": "Bonfire: Validate US Telephone Numbers",
       "difficulty": "4.01",
       "description": [
@@ -63,7 +63,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a3f503de51cf954ede28891d",
+      "id": "a3f503de51cf954ede28891d",
       "name": "Bonfire: Symmetric Difference",
       "difficulty": "4.02",
       "description": [
@@ -100,7 +100,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "aa2e6f85cab2ab736c9a9b24",
+      "id": "aa2e6f85cab2ab736c9a9b24",
       "name": "Bonfire: Exact Change",
       "difficulty": "4.03",
       "description": [
@@ -155,7 +155,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a56138aff60341a09ed6c480",
+      "id": "a56138aff60341a09ed6c480",
       "name": "Bonfire: Inventory Update",
       "difficulty": "4.04",
       "description": [
@@ -209,7 +209,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a7bf700cd123b9a54eef01d5",
+      "id": "a7bf700cd123b9a54eef01d5",
       "name": "Bonfire: No repeats please",
       "difficulty": "4.05",
       "description": [
@@ -250,7 +250,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a19f0fbe1872186acd434d5a",
+      "id": "a19f0fbe1872186acd434d5a",
       "name": "Bonfire: Friendly Date Ranges",
       "difficulty": "4.06",
       "description": [
@@ -294,4 +294,4 @@
       "descriptionPt": []
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/seed/challenges/basejumps.json b/seed/challenges/basejumps.json
index b14e0b1030..50b55a0063 100644
--- a/seed/challenges/basejumps.json
+++ b/seed/challenges/basejumps.json
@@ -3,7 +3,7 @@
   "order": 0.014,
   "challenges": [
     {
-      "_id": "bd7158d8c443eddfaeb5bcef",
+      "id": "bd7158d8c443eddfaeb5bcef",
       "name": "Waypoint: Get Set for Basejumps",
       "difficulty": 2.00,
       "challengeSeed": ["128451852"],
@@ -64,7 +64,7 @@
       "tests": []
     },
     {
-      "_id": "bd7158d8c443eddfaeb5bdef",
+      "id": "bd7158d8c443eddfaeb5bdef",
       "name": "Basejump: Build a Voting App",
       "difficulty": 2.01,
       "challengeSeed": ["128451852"],
@@ -99,7 +99,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c443eddfaeb5bdff",
+      "id": "bd7158d8c443eddfaeb5bdff",
       "name": "Basejump: Build a Nightlife Coordination App",
       "difficulty": 2.02,
       "challengeSeed": ["128451852"],
@@ -130,7 +130,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c443eddfaeb5bd0e",
+      "id": "bd7158d8c443eddfaeb5bd0e",
       "name": "Basejump: Chart the Stock Market",
       "difficulty": 2.03,
       "challengeSeed": ["128451852"],
@@ -161,7 +161,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c443eddfaeb5bd0f",
+      "id": "bd7158d8c443eddfaeb5bd0f",
       "name": "Basejump: Manage a Book Trading Club",
       "difficulty": 2.04,
       "challengeSeed": ["128451852"],
@@ -192,7 +192,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c443eddfaeb5bdee",
+      "id": "bd7158d8c443eddfaeb5bdee",
       "name": "Basejump: Build a Pinterest Clone",
       "difficulty": 2.05,
       "challengeSeed": ["128451852"],
diff --git a/seed/challenges/basic-bonfires.json b/seed/challenges/basic-bonfires.json
index 229322df15..e1a7d98653 100644
--- a/seed/challenges/basic-bonfires.json
+++ b/seed/challenges/basic-bonfires.json
@@ -3,7 +3,7 @@
   "order": 0.007,
   "challenges": [
     {
-      "_id": "bd7139d8c441eddfaeb5bdef",
+      "id": "bd7139d8c441eddfaeb5bdef",
       "name": "Waypoint: Pair Program on Bonfires",
       "difficulty": 0.44,
       "challengeSeed": ["119657641"],
@@ -39,7 +39,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ad7123c8c441eddfaeb5bdef",
+      "id": "ad7123c8c441eddfaeb5bdef",
       "name": "Bonfire: Meet Bonfire",
       "difficulty": "0",
       "description": [
@@ -78,7 +78,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a202eed8fc186c8434cb6d61",
+      "id": "a202eed8fc186c8434cb6d61",
       "name": "Bonfire: Reverse a String",
       "difficulty": "1.01",
       "tests": [
@@ -119,7 +119,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a302f7aae1aa3152a5b413bc",
+      "id": "a302f7aae1aa3152a5b413bc",
       "name": "Bonfire: Factorialize a Number",
       "tests": [
         "expect(factorialize(5)).to.be.a(\"Number\");",
@@ -158,7 +158,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "aaa48de84e1ecc7c742e1124",
+      "id": "aaa48de84e1ecc7c742e1124",
       "name": "Bonfire: Check for Palindromes",
       "difficulty": "1.03",
       "description": [
@@ -204,7 +204,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a26cbbe9ad8655a977e1ceb5",
+      "id": "a26cbbe9ad8655a977e1ceb5",
       "name": "Bonfire: Find the Longest Word in a String",
       "difficulty": "1.04",
       "description": [
@@ -243,7 +243,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ab6137d4e35944e21037b769",
+      "id": "ab6137d4e35944e21037b769",
       "name": "Bonfire: Title Case a Sentence",
       "difficulty": "1.05",
       "description": [
@@ -280,7 +280,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a789b3483989747d63b0e427",
+      "id": "a789b3483989747d63b0e427",
       "name": "Bonfire: Return Largest Numbers in Arrays",
       "difficulty": "1.06",
       "description": [
@@ -318,7 +318,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "acda2fb1324d9b0fa741e6b5",
+      "id": "acda2fb1324d9b0fa741e6b5",
       "name": "Bonfire: Confirm the Ending",
       "difficulty": "1.07",
       "description": [
@@ -355,7 +355,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "afcc8d540bea9ea2669306b6",
+      "id": "afcc8d540bea9ea2669306b6",
       "name": "Bonfire: Repeat a string repeat a string",
       "difficulty": "1.08",
       "description": [
@@ -391,7 +391,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ac6993d51946422351508a41",
+      "id": "ac6993d51946422351508a41",
       "name": "Bonfire: Truncate a string",
       "difficulty": "1.09",
       "description": [
@@ -428,7 +428,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a9bd25c716030ec90084d8a1",
+      "id": "a9bd25c716030ec90084d8a1",
       "name": "Bonfire: Chunky Monkey",
       "difficulty": "1.10",
       "description": [
@@ -465,7 +465,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ab31c21b530c0dafa9e241ee",
+      "id": "ab31c21b530c0dafa9e241ee",
       "name": "Bonfire: Slasher Flick",
       "difficulty": "1.11",
       "description": [
@@ -502,7 +502,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "af2170cad53daa0770fabdea",
+      "id": "af2170cad53daa0770fabdea",
       "name": "Bonfire: Mutations",
       "difficulty": "1.12",
       "description": [
@@ -545,7 +545,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "adf08ec01beb4f99fc7a68f2",
+      "id": "adf08ec01beb4f99fc7a68f2",
       "name": "Bonfire: Falsey Bouncer",
       "difficulty": "1.50",
       "description": [
@@ -583,7 +583,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a8e512fbe388ac2f9198f0fa",
+      "id": "a8e512fbe388ac2f9198f0fa",
       "name": "Bonfire: Where art thou",
       "difficulty": "1.55",
       "description": [
@@ -621,7 +621,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a39963a4c10bc8b4d4f06d7e",
+      "id": "a39963a4c10bc8b4d4f06d7e",
       "name": "Bonfire: Seek and Destroy",
       "difficulty": "1.60",
       "description": [
@@ -657,7 +657,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a24c1a4622e3c05097f71d67",
+      "id": "a24c1a4622e3c05097f71d67",
       "name": "Bonfire: Where do I belong",
       "difficulty": "1.61",
       "description": [
@@ -693,7 +693,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a3566b1109230028080c9345",
+      "id": "a3566b1109230028080c9345",
       "name": "Bonfire: Sum All Numbers in a Range",
       "difficulty": "2.00",
       "description": [
@@ -733,7 +733,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a5de63ebea8dbee56860f4f2",
+      "id": "a5de63ebea8dbee56860f4f2",
       "name": "Bonfire: Diff Two Arrays",
       "difficulty": "2.01",
       "description": [
@@ -778,7 +778,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a7f4d8f2483413a6ce226cac",
+      "id": "a7f4d8f2483413a6ce226cac",
       "name": "Bonfire: Roman Numeral Converter",
       "tests": [
         "expect(convert(12)).to.equal(\"XII\");",
@@ -818,7 +818,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a0b5010f579e69b815e7c5d6",
+      "id": "a0b5010f579e69b815e7c5d6",
       "name": "Bonfire: Search and Replace",
       "tests": [
         "expect(replace(\"Let us go to the store\", \"store\", \"mall\")).to.equal(\"Let us go to the mall\");",
@@ -861,7 +861,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "aa7697ea2477d1316795783b",
+      "id": "aa7697ea2477d1316795783b",
       "name": "Bonfire: Pig Latin",
       "tests": [
         "expect(translate(\"california\")).to.equal(\"aliforniacay\");",
@@ -904,7 +904,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "afd15382cdfb22c9efe8b7de",
+      "id": "afd15382cdfb22c9efe8b7de",
       "name": "Bonfire: DNA Pairing",
       "tests": [
         "assert.deepEqual(pair(\"ATCGA\"),[['A','T'],['T','A'],['C','G'],['G','C'],['A','T']], 'should return the dna pair');",
@@ -942,7 +942,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "af7588ade1100bde429baf20",
+      "id": "af7588ade1100bde429baf20",
       "name": "Bonfire: Missing letters",
       "difficulty": "2.05",
       "description": [
@@ -979,7 +979,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a77dbc43c33f39daa4429b4f",
+      "id": "a77dbc43c33f39daa4429b4f",
       "name": "Bonfire: Boo who",
       "difficulty": "2.06",
       "description": [
@@ -1021,7 +1021,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a105e963526e7de52b219be9",
+      "id": "a105e963526e7de52b219be9",
       "name": "Bonfire: Sorted Union",
       "difficulty": "2.07",
       "description": [
@@ -1058,7 +1058,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a6b0bb188d873cb2c8729495",
+      "id": "a6b0bb188d873cb2c8729495",
       "name": "Bonfire: Convert HTML Entities",
       "difficulty": "2.07",
       "description": [
@@ -1093,7 +1093,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a103376db3ba46b2d50db289",
+      "id": "a103376db3ba46b2d50db289",
       "name": "Bonfire: Spinal Tap Case",
       "difficulty": "2.08",
       "description": [
@@ -1132,7 +1132,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a5229172f011153519423690",
+      "id": "a5229172f011153519423690",
       "name": "Bonfire: Sum All Odd Fibonacci Numbers",
       "difficulty": "2.09",
       "description": [
@@ -1172,7 +1172,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a3bfc1673c0526e06d3ac698",
+      "id": "a3bfc1673c0526e06d3ac698",
       "name": "Bonfire: Sum All Primes",
       "difficulty": "2.10",
       "description": [
@@ -1210,7 +1210,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ae9defd7acaf69703ab432ea",
+      "id": "ae9defd7acaf69703ab432ea",
       "name": "Bonfire: Smallest Common Multiple",
       "difficulty": "2.11",
       "description": [
@@ -1248,7 +1248,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a6e40f1041b06c996f7b2406",
+      "id": "a6e40f1041b06c996f7b2406",
       "name": "Bonfire: Finders Keepers",
       "difficulty": "2.12",
       "description": [
@@ -1283,7 +1283,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a5deed1811a43193f9f1c841",
+      "id": "a5deed1811a43193f9f1c841",
       "name": "Bonfire: Drop it",
       "difficulty": "2.13",
       "description": [
@@ -1320,7 +1320,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "ab306dbdcc907c7ddfc30830",
+      "id": "ab306dbdcc907c7ddfc30830",
       "name": "Bonfire: Steamroller",
       "difficulty": "2.14",
       "description": [
@@ -1356,7 +1356,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a8d97bd4c764e91f9d2bda01",
+      "id": "a8d97bd4c764e91f9d2bda01",
       "name": "Bonfire: Binary Agents",
       "difficulty": "2.15",
       "description": [
@@ -1392,7 +1392,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a10d2431ad0c6a099a4b8b52",
+      "id": "a10d2431ad0c6a099a4b8b52",
       "name": "Bonfire: Everything Be True",
       "difficulty": "2.21",
       "description": [
@@ -1430,7 +1430,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a97fd23d9b809dac9921074f",
+      "id": "a97fd23d9b809dac9921074f",
       "name": "Bonfire: Arguments Optional",
       "difficulty": "2.22",
       "description": [
diff --git a/seed/challenges/basic-html5-and-css.json b/seed/challenges/basic-html5-and-css.json
index d2a8e1f64e..dd7f467e9b 100644
--- a/seed/challenges/basic-html5-and-css.json
+++ b/seed/challenges/basic-html5-and-css.json
@@ -3,7 +3,7 @@
   "order": 0.002,
   "challenges": [
     {
-      "_id": "bd7123c8c441eddfaeb5bdef",
+      "id": "bd7123c8c441eddfaeb5bdef",
       "name": "Waypoint: Say Hello to HTML Elements",
       "difficulty": 0.0085,
       "description": [
@@ -42,7 +42,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf0887a",
+      "id": "bad87fee1348bd9aedf0887a",
       "name": "Waypoint: Headline with the h2 Element",
       "difficulty": 0.010,
       "description": [
@@ -78,7 +78,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08801",
+      "id": "bad87fee1348bd9aedf08801",
       "name": "Waypoint: Inform with the Paragraph Element",
       "difficulty": 0.011,
       "description": [
@@ -112,7 +112,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aeaf08801",
+      "id": "bad87fee1348bd9aeaf08801",
       "name": "Waypoint: Visually Separate Elements with Line Breaks",
       "difficulty": 0.012,
       "description": [
@@ -147,7 +147,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08802",
+      "id": "bad87fee1348bd9aedf08802",
       "name": "Waypoint: Uncomment HTML",
       "difficulty": 0.013,
       "description": [
@@ -191,7 +191,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08804",
+      "id": "bad87fee1348bd9aedf08804",
       "name": "Waypoint: Comment out HTML",
       "difficulty": 0.014,
       "description": [
@@ -233,7 +233,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08833",
+      "id": "bad87fee1348bd9aedf08833",
       "name": "Waypoint: Fill in the Blank with Placeholder Text",
       "difficulty": 0.015,
       "description": [
@@ -274,7 +274,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fed1348bd9aedf08833",
+      "id": "bad87fed1348bd9aedf08833",
       "name": "Waypoint: Delete HTML Elements",
       "difficulty": 0.016,
       "description": [
@@ -314,7 +314,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08803",
+      "id": "bad87fee1348bd9aedf08803",
       "name": "Waypoint: Change the Color of Text",
       "difficulty": 0.017,
       "description": [
@@ -349,7 +349,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08805",
+      "id": "bad87fee1348bd9aedf08805",
       "name": "Waypoint: Use CSS Selectors to Style Elements",
       "difficulty": 0.018,
       "description": [
@@ -393,7 +393,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aecf08806",
+      "id": "bad87fee1348bd9aecf08806",
       "name": "Waypoint: Use a CSS Class to Style an Element",
       "difficulty": 0.019,
       "description": [
@@ -434,7 +434,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aefe08806",
+      "id": "bad87fee1348bd9aefe08806",
       "name": "Waypoint: Style Multiple Elements with a CSS Class",
       "difficulty": 0.020,
       "description": [
@@ -472,7 +472,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08806",
+      "id": "bad87fee1348bd9aedf08806",
       "name": "Waypoint: Change the Font Size of an Element",
       "difficulty": 0.021,
       "description": [
@@ -511,7 +511,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede08807",
+      "id": "bad87fee1348bd9aede08807",
       "name": "Waypoint: Set the Font Family of an Element",
       "difficulty": 0.022,
       "description": [
@@ -551,7 +551,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08807",
+      "id": "bad87fee1348bd9aedf08807",
       "name": "Waypoint: Import a Google Font",
       "difficulty": 0.023,
       "description": [
@@ -596,7 +596,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08808",
+      "id": "bad87fee1348bd9aedf08808",
       "name": "Waypoint: Specify How Fonts Should Degrade",
       "difficulty": 0.024,
       "description": [
@@ -645,7 +645,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08809",
+      "id": "bad87fee1348bd9aedf08809",
       "name": "Waypoint: Override Styles with Important",
       "difficulty": 0.025,
       "description": [
@@ -701,7 +701,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08812",
+      "id": "bad87fee1348bd9aedf08812",
       "name": "Waypoint: Add Images to your Website",
       "difficulty": 0.026,
       "description": [
@@ -749,7 +749,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9acdf08812",
+      "id": "bad87fee1348bd9acdf08812",
       "name": "Waypoint: Size your Images",
       "difficulty": 0.027,
       "description": [
@@ -798,7 +798,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9bedf08813",
+      "id": "bad87fee1348bd9bedf08813",
       "name": "Waypoint: Add Borders Around your Elements",
       "difficulty": 0.028,
       "description": [
@@ -853,7 +853,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08814",
+      "id": "bad87fee1348bd9aedf08814",
       "name": "Waypoint: Add Rounded Corners with a Border Radius",
       "difficulty": 0.029,
       "description": [
@@ -912,7 +912,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08815",
+      "id": "bad87fee1348bd9aedf08815",
       "name": "Waypoint: Make Circular Images with a Border Radius",
       "difficulty": 0.030,
       "description": [
@@ -970,7 +970,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08816",
+      "id": "bad87fee1348bd9aedf08816",
       "name": "Waypoint: Link to External Pages with Anchor Elements",
       "difficulty": 0.031,
       "description": [
@@ -1032,7 +1032,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede08817",
+      "id": "bad87fee1348bd9aede08817",
       "name": "Waypoint: Wrap an Anchor Element within a Paragraph",
       "difficulty": 0.032,
       "description": [
@@ -1099,7 +1099,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08817",
+      "id": "bad87fee1348bd9aedf08817",
       "name": "Waypoint: Make Dead Links using the Hash Symbol",
       "difficulty": 0.033,
       "description": [
@@ -1161,7 +1161,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08820",
+      "id": "bad87fee1348bd9aedf08820",
       "name": "Waypoint: Turn an Image into a Link",
       "difficulty": 0.034,
       "description": [
@@ -1226,7 +1226,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08818",
+      "id": "bad87fee1348bd9aedf08818",
       "name": "Waypoint: Add Alt Text to an Image for Accessibility",
       "difficulty": 0.035,
       "description": [
@@ -1289,7 +1289,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08827",
+      "id": "bad87fee1348bd9aedf08827",
       "name": "Waypoint: Create a Bulleted Unordered List",
       "difficulty": 0.036,
       "description": [
@@ -1354,7 +1354,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08828",
+      "id": "bad87fee1348bd9aedf08828",
       "name": "Waypoint: Create an Ordered List",
       "difficulty": 0.037,
       "description": [
@@ -1426,7 +1426,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08829",
+      "id": "bad87fee1348bd9aedf08829",
       "name": "Waypoint: Create a Text Field",
       "difficulty": 0.038,
       "description": [
@@ -1497,7 +1497,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08830",
+      "id": "bad87fee1348bd9aedf08830",
       "name": "Waypoint: Add Placeholder Text to a Text Field",
       "difficulty": 0.039,
       "description": [
@@ -1570,7 +1570,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede08830",
+      "id": "bad87fee1348bd9aede08830",
       "name": "Waypoint: Create a Form Element",
       "difficulty": 0.040,
       "description": [
@@ -1645,7 +1645,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedd08830",
+      "id": "bad87fee1348bd9aedd08830",
       "name": "Waypoint: Add a Submit Button to a Form",
       "difficulty": 0.041,
       "description": [
@@ -1722,7 +1722,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedc08830",
+      "id": "bad87fee1348bd9aedc08830",
       "name": "Waypoint: Use HTML5 to Require a Field",
       "difficulty": 0.042,
       "description": [
@@ -1797,7 +1797,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08834",
+      "id": "bad87fee1348bd9aedf08834",
       "name": "Waypoint: Create a Set of Radio Buttons",
       "difficulty": 0.043,
       "description": [
@@ -1880,7 +1880,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08835",
+      "id": "bad87fee1348bd9aedf08835",
       "name": "Waypoint: Create a Set of Checkboxes",
       "difficulty": 0.044,
       "description": [
@@ -1960,7 +1960,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede18835",
+      "id": "bad87fee1348bd9aede18835",
       "name": "Waypoint: Clean up your form using Linebreaks",
       "difficulty": 0.045,
       "description": [
@@ -2039,7 +2039,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedd08835",
+      "id": "bad87fee1348bd9aedd08835",
       "name": "Waypoint: Check Radio Buttons and Checkboxes by Default",
       "difficulty": 0.046,
       "description": [
@@ -2122,7 +2122,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede08835",
+      "id": "bad87fee1348bd9aede08835",
       "name": "Waypoint: Wrap Many Elements within a Single Div Element",
       "difficulty": 0.047,
       "description": [
@@ -2210,7 +2210,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede07836",
+      "id": "bad87fee1348bd9aede07836",
       "name": "Waypoint: Give a Background Color to a Div Element",
       "difficulty": 0.048,
       "description": [
@@ -2296,7 +2296,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad88fee1348bd9aedf08825",
+      "id": "bad88fee1348bd9aedf08825",
       "name": "Waypoint: Adjusting the Padding of an Element",
       "difficulty": 0.064,
       "description": [
@@ -2357,7 +2357,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08822",
+      "id": "bad87fee1348bd9aedf08822",
       "name": "Waypoint: Adjust the Margin of an Element",
       "difficulty": 0.065,
       "description": [
@@ -2420,7 +2420,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08823",
+      "id": "bad87fee1348bd9aedf08823",
       "name": "Waypoint: Add a Negative Margin to an Element",
       "difficulty": 0.066,
       "description": [
@@ -2482,7 +2482,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08824",
+      "id": "bad87fee1348bd9aedf08824",
       "name": "Waypoint: Add Different Padding to Each Side of an Element",
       "difficulty": 0.067,
       "description": [
@@ -2547,7 +2547,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1248bd9aedf08824",
+      "id": "bad87fee1248bd9aedf08824",
       "name": "Waypoint: Add Different Margins to Each Side of an Element",
       "difficulty": 0.068,
       "description": [
@@ -2612,7 +2612,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08826",
+      "id": "bad87fee1348bd9aedf08826",
       "name": "Waypoint: Use Clockwise Notation to Specify the Padding of an Element",
       "difficulty": 0.069,
       "description": [
@@ -2674,7 +2674,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08726",
+      "id": "bad87fee1348bd9aedf08726",
       "name": "Waypoint: Use Clockwise Notation to Specify the Margin of an Element",
       "difficulty": 0.070,
       "description": [
diff --git a/seed/challenges/basic-javascript.json b/seed/challenges/basic-javascript.json
index 8f21bb5970..5960d9f88a 100644
--- a/seed/challenges/basic-javascript.json
+++ b/seed/challenges/basic-javascript.json
@@ -3,7 +3,7 @@
   "order": 0.006,
   "challenges": [
     {
-      "_id": "bd7129d8c441eddfaeb5bdef",
+      "id": "bd7129d8c441eddfaeb5bdef",
       "name": "Waypoint: Build an Adventure Game",
       "difficulty": 0.24,
       "challengeSeed": ["114604814"],
@@ -28,7 +28,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7130d8c441eddfaeb5bdef",
+      "id": "bd7130d8c441eddfaeb5bdef",
       "name": "Waypoint: Build Rock Paper Scissors",
       "difficulty": 0.25,
       "challengeSeed": ["114604815"],
@@ -51,7 +51,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7131d8c441eddfaeb5bdef",
+      "id": "bd7131d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn JavaScript For Loops",
       "difficulty": 0.26,
       "challengeSeed": ["114614220"],
@@ -74,7 +74,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7132d8c441eddfaeb5bdef",
+      "id": "bd7132d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn JavaScript While Loops",
       "difficulty": 0.27,
       "challengeSeed": ["114612889"],
@@ -96,7 +96,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7133d8c441eddfaeb5bdef",
+      "id": "bd7133d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Control Flow",
       "difficulty": 0.28,
       "challengeSeed": ["114612888"],
@@ -120,7 +120,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7134d8c441eddfaeb5bdef",
+      "id": "bd7134d8c441eddfaeb5bdef",
       "name": "Waypoint: Build a Contact List",
       "difficulty": 0.29,
       "challengeSeed": ["114612887"],
@@ -143,14 +143,14 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7135d8c441eddfaeb5bdef",
+      "id": "bd7135d8c441eddfaeb5bdef",
       "name": "Waypoint: Build an Address Book",
       "difficulty": 0.30,
       "challengeSeed": ["114612885"],
       "description": [
         "Let's learn more about objects.",
         "Go to <a href='http://www.codecademy.com/courses/spencer-sandbox/0/1' target='_blank'>http://www.codecademy.com/courses/spencer-sandbox/0/1</a> and complete the section.",
-        "Be sure to also complete this section: <a href='http://www.codecademy.com/courses/building-an-address-book/0/1?curriculum_id=506324b3a7dffd00020bf661' target='_blank'>http://www.codecademy.com/courses/building-an-address-book/0/1?curriculum_id=506324b3a7dffd00020bf661</a>."
+        "Be sure to also complete this section: <a href='http://www.codecademy.com/courses/building-an-address-book/0/1?curriculumid=506324b3a7dffd00020bf661' target='_blank'>http://www.codecademy.com/courses/building-an-address-book/0/1?curriculumid=506324b3a7dffd00020bf661</a>."
       ],
       "challengeType": 2,
       "tests": [],
@@ -166,7 +166,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7136d8c441eddfaeb5bdef",
+      "id": "bd7136d8c441eddfaeb5bdef",
       "name": "Waypoint: Build a Cash Register",
       "difficulty": 0.31,
       "challengeSeed": ["114612882"],
@@ -189,7 +189,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7118d8c441eddfaeb5bdef",
+      "id": "bd7118d8c441eddfaeb5bdef",
       "name": "Waypoint: Discover Chrome DevTools",
       "difficulty": 0.32,
       "challengeSeed": ["110752743"],
@@ -220,7 +220,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7138d8c441eddfaeb5bdef",
+      "id": "bd7138d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Regular Expressions",
       "difficulty": 0.33,
       "challengeSeed": ["112547802"],
@@ -252,4 +252,4 @@
       "descriptionPt": []
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/seed/challenges/bootstrap.json b/seed/challenges/bootstrap.json
index 0981868baa..6bddb3b578 100644
--- a/seed/challenges/bootstrap.json
+++ b/seed/challenges/bootstrap.json
@@ -3,7 +3,7 @@
   "order": 0.003,
   "challenges": [
     {
-      "_id": "bad87fee1348bd9acde08812",
+      "id": "bad87fee1348bd9acde08812",
       "name": "Waypoint: Mobile Responsive Images",
       "difficulty": 0.047,
       "description": [
@@ -89,7 +89,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd8acde08812",
+      "id": "bad87fee1348bd8acde08812",
       "name": "Waypoint: Center Text with Bootstrap",
       "difficulty": 0.048,
       "description": [
@@ -172,7 +172,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348cd8acdf08812",
+      "id": "bad87fee1348cd8acdf08812",
       "name": "Waypoint: Create a Bootstrap Button",
       "difficulty": 0.049,
       "description": [
@@ -256,7 +256,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348cd8acef08812",
+      "id": "bad87fee1348cd8acef08812",
       "name": "Waypoint: Create a Block Element Bootstrap Button",
       "difficulty": 0.050,
       "description": [
@@ -344,7 +344,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348cd8acef08811",
+      "id": "bad87fee1348cd8acef08811",
       "name": "Waypoint: Taste the Bootstrap Button Color Rainbow",
       "difficulty": 0.051,
       "description": [
@@ -430,7 +430,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348cd8acef08813",
+      "id": "bad87fee1348cd8acef08813",
       "name": "Waypoint: Call out Optional Actions with Button Info",
       "difficulty": 0.052,
       "description": [
@@ -517,7 +517,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348ce8acef08814",
+      "id": "bad87fee1348ce8acef08814",
       "name": "Waypoint: Warn your Users of a Dangerous Action",
       "difficulty": 0.053,
       "description": [
@@ -605,7 +605,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad88fee1348ce8acef08815",
+      "id": "bad88fee1348ce8acef08815",
       "name": "Waypoint: Use the Bootstrap Grid to Put Elements Side By Side",
       "difficulty": 0.054,
       "description": [
@@ -698,7 +698,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedf08845",
+      "id": "bad87fee1348bd9aedf08845",
       "name": "Waypoint: Ditch Custom CSS for Bootstrap",
       "difficulty": 0.055,
       "description": [
@@ -796,7 +796,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aede08845",
+      "id": "bad87fee1348bd9aede08845",
       "name": "Waypoint: Create a Custom Heading",
       "difficulty": 0.056,
       "description": [
@@ -885,7 +885,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedd08845",
+      "id": "bad87fee1348bd9aedd08845",
       "name": "Waypoint: Add Font Awesome Icons to our Buttons",
       "difficulty": 0.057,
       "description": [
@@ -973,7 +973,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedc08845",
+      "id": "bad87fee1348bd9aedc08845",
       "name": "Waypoint: Add Font Awesome Icons all of our Buttons",
       "difficulty": 0.058,
       "description": [
@@ -1060,7 +1060,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aedb08845",
+      "id": "bad87fee1348bd9aedb08845",
       "name": "Waypoint: Responsively Style Radio Buttons",
       "difficulty": 0.059,
       "description": [
@@ -1146,7 +1146,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aeda08845",
+      "id": "bad87fee1348bd9aeda08845",
       "name": "Waypoint: Responsively Style Checkboxes",
       "difficulty": 0.060,
       "description": [
@@ -1239,7 +1239,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aed908845",
+      "id": "bad87fee1348bd9aed908845",
       "name": "Waypoint: Style Text Inputs as Form Controls",
       "difficulty": 0.061,
       "description": [
@@ -1342,7 +1342,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bad87fee1348bd9aec908845",
+      "id": "bad87fee1348bd9aec908845",
       "name": "Waypoint: Line up Form Elements Responsively with Bootstrap",
       "difficulty": 0.062,
       "description": [
diff --git a/seed/challenges/computer-science.json b/seed/challenges/computer-science.json
index cd6acc6425..25d4565ebd 100644
--- a/seed/challenges/computer-science.json
+++ b/seed/challenges/computer-science.json
@@ -3,7 +3,7 @@
   "order": 0.005,
   "challenges": [
     {
-      "_id": "bd7123d8c441eddfaeb5bdef",
+      "id": "bd7123d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Basic Computer Science",
       "difficulty": 0.90,
       "challengeSeed": ["114628241"],
@@ -32,7 +32,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd8124d8c441eddfaeb5bdef",
+      "id": "bd8124d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Loops",
       "difficulty": 0.19,
       "challengeSeed": ["114597348"],
@@ -59,7 +59,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd8125d8c441eddfaeb5bdef",
+      "id": "bd8125d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Computer Hardware",
       "difficulty": 0.20,
       "challengeSeed": ["114597347"],
@@ -86,7 +86,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd8126d8c441eddfaeb5bdef",
+      "id": "bd8126d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Computer Networking",
       "difficulty": 0.21,
       "challengeSeed": ["114604811"],
@@ -113,7 +113,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd8127d8c441eddfaeb5bdef",
+      "id": "bd8127d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Boolean Logic",
       "difficulty": 0.22,
       "challengeSeed": ["114604812"],
@@ -140,7 +140,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd8128d8c441eddfaeb5bdef",
+      "id": "bd8128d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn Computer Security",
       "difficulty": 0.23,
       "challengeSeed": ["114604813"],
diff --git a/seed/challenges/full-stack-javascript.json b/seed/challenges/full-stack-javascript.json
index 15018ed772..4a91042a8c 100644
--- a/seed/challenges/full-stack-javascript.json
+++ b/seed/challenges/full-stack-javascript.json
@@ -3,7 +3,7 @@
   "order": 0.013,
   "challenges": [
     {
-      "_id": "bd7154d8c441eddfaeb5bdef",
+      "id": "bd7154d8c441eddfaeb5bdef",
       "name": "Waypoint: Get Started with Angular.js",
       "difficulty": 0.34,
       "challengeSeed": ["114684726"],
@@ -26,7 +26,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7155d8c441eddfaeb5bdef",
+      "id": "bd7155d8c441eddfaeb5bdef",
       "name": "Waypoint: Apply Angular.js Directives",
       "difficulty": 0.35,
       "challengeSeed": ["114684727"],
@@ -49,7 +49,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7156d8c441eddfaeb5bdef",
+      "id": "bd7156d8c441eddfaeb5bdef",
       "name": "Waypoint: Power Forms with Angular.js",
       "difficulty": 0.36,
       "challengeSeed": ["114684729"],
@@ -72,7 +72,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7157d8c441eddfaeb5bdef",
+      "id": "bd7157d8c441eddfaeb5bdef",
       "name": "Waypoint: Customize Angular.js Directives",
       "difficulty": 0.37,
       "challengeSeed": ["114685062"],
@@ -94,7 +94,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c441eddfaeb5bdef",
+      "id": "bd7158d8c441eddfaeb5bdef",
       "name": "Waypoint: Create Angular.js Services",
       "difficulty": 0.38,
       "challengeSeed": ["114685060"],
@@ -117,7 +117,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7153d8c441eddfaeb5bd0f",
+      "id": "bd7153d8c441eddfaeb5bd0f",
       "name": "Waypoint: Manage Packages with NPM",
       "difficulty": 0.39,
       "challengeSeed": ["126433450"],
@@ -170,7 +170,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7153d8c441eddfaeb5bdff",
+      "id": "bd7153d8c441eddfaeb5bdff",
       "name": "Waypoint: Start a Node.js Server",
       "difficulty": 0.40,
       "challengeSeed": ["126411561"],
@@ -212,7 +212,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7153d8c441eddfaeb5bdfe",
+      "id": "bd7153d8c441eddfaeb5bdfe",
       "name": "Waypoint: Continue working with Node.js Servers",
       "difficulty": 0.41,
       "challengeSeed": ["128836506"],
@@ -239,7 +239,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7153d8c441eddfaeb5bdfd",
+      "id": "bd7153d8c441eddfaeb5bdfd",
       "name": "Waypoint: Finish working with Node.js Servers",
       "difficulty": 0.42,
       "challengeSeed": ["128836507"],
@@ -266,7 +266,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7153d8c441eddfaeb5bd1f",
+      "id": "bd7153d8c441eddfaeb5bd1f",
       "name": "Waypoint: Build Web Apps with Express.js",
       "difficulty": 0.43,
       "challengeSeed": ["126411559"],
@@ -307,7 +307,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7140d8c441eddfaeb5bdef",
+      "id": "bd7140d8c441eddfaeb5bdef",
       "name": "Waypoint: Manage Source Code with Git",
       "difficulty": 0.44,
       "challengeSeed": ["114635309"],
diff --git a/seed/challenges/functional-programming.json b/seed/challenges/functional-programming.json
index 2742dc7fe7..868b626372 100644
--- a/seed/challenges/functional-programming.json
+++ b/seed/challenges/functional-programming.json
@@ -3,7 +3,7 @@
   "order": 0.010,
   "challenges": [
     {
-      "_id": "bd7129d8c441eddfbeb5bddf",
+      "id": "bd7129d8c441eddfbeb5bddf",
       "name": "Waypoint: Practice Functional Programming",
       "difficulty": 0.01,
       "challengeSeed": ["129169463"],
diff --git a/seed/challenges/get-set-for-free-code-camp.json b/seed/challenges/get-set-for-free-code-camp.json
index fc29841ef2..30e00e71ed 100644
--- a/seed/challenges/get-set-for-free-code-camp.json
+++ b/seed/challenges/get-set-for-free-code-camp.json
@@ -3,7 +3,7 @@
   "order": 0.001,
   "challenges": [
     {
-      "_id": "bd7124d8c441eddfaeb5bdef",
+      "id": "bd7124d8c441eddfaeb5bdef",
       "name": "Waypoint: Learn how Free Code Camp Works",
       "difficulty": 0.001,
       "challengeSeed": ["125407438"],
@@ -40,7 +40,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7125d8c441eddfaeb5bd0f",
+      "id": "bd7125d8c441eddfaeb5bd0f",
       "name": "Waypoint: Join Our Chat Room",
       "difficulty": 0.002,
       "challengeSeed": ["124555254"],
@@ -81,7 +81,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7125d8c441eddfaeb5bdff",
+      "id": "bd7125d8c441eddfaeb5bdff",
       "name": "Waypoint: Preview our Challenge Map",
       "difficulty": 0.003,
       "challengeSeed": ["125407437"],
@@ -114,7 +114,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7125d8c441eddfaeb5bd1f",
+      "id": "bd7125d8c441eddfaeb5bd1f",
       "name": "Waypoint: Browse our Field Guide",
       "difficulty": 0.004,
       "challengeSeed": ["125407435"],
@@ -145,7 +145,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7125d8c441eddfaeb5bd2f",
+      "id": "bd7125d8c441eddfaeb5bd2f",
       "name": "Waypoint: Customize your Portfolio Page",
       "difficulty": 0.005,
       "challengeSeed": ["125407433"],
@@ -180,7 +180,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7126d8c441eddfaeb5bd3f",
+      "id": "bd7126d8c441eddfaeb5bd3f",
       "name": "Waypoint: Try Camper News",
       "difficulty": 0.006,
       "challengeSeed": ["124553410"],
@@ -219,7 +219,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7126d8c441eddfaeb5bd3e",
+      "id": "bd7126d8c441eddfaeb5bd3e",
       "name": "Waypoint: Meet Other Campers in your City",
       "difficulty": 0.007,
       "challengeSeed": ["127358841"],
@@ -256,7 +256,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7137d8c441eddfaeb5bdef",
+      "id": "bd7137d8c441eddfaeb5bdef",
       "name": "Waypoint: Get Help the Hacker Way with RSAP",
       "difficulty": 0.008,
       "challengeSeed": ["125407432"],
diff --git a/seed/challenges/intermediate-bonfires.json b/seed/challenges/intermediate-bonfires.json
index 8f9ac09445..b005ba67d2 100644
--- a/seed/challenges/intermediate-bonfires.json
+++ b/seed/challenges/intermediate-bonfires.json
@@ -3,7 +3,7 @@
   "order": 0.009,
   "challenges": [
     {
-      "_id": "a2f1d72d9b908d0bd72bb9f6",
+      "id": "a2f1d72d9b908d0bd72bb9f6",
       "name": "Bonfire: Make a Person",
       "difficulty": "3.01",
       "description": [
@@ -54,7 +54,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "af4afb223120f7348cdfc9fd",
+      "id": "af4afb223120f7348cdfc9fd",
       "name": "Bonfire: Map the Debris",
       "difficulty": "3.02",
       "description": [
@@ -94,7 +94,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "a3f503de51cfab748ff001aa",
+      "id": "a3f503de51cfab748ff001aa",
       "name": "Bonfire: Pairwise",
       "difficulty": "3.03",
       "description": [
@@ -133,4 +133,4 @@
       "descriptionPt": []
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/seed/challenges/jquery-ajax-and-json.json b/seed/challenges/jquery-ajax-and-json.json
index 3431de604f..a03cb7e7cb 100644
--- a/seed/challenges/jquery-ajax-and-json.json
+++ b/seed/challenges/jquery-ajax-and-json.json
@@ -3,7 +3,7 @@
   "order": 0.004,
   "challenges": [
     {
-      "_id": "bd7112d8c441eddfaeb5bded",
+      "id": "bd7112d8c441eddfaeb5bded",
       "name": "Waypoint: Get Started with jQuery",
       "difficulty": 0.13,
       "challengeSeed": ["125671865"],
@@ -28,7 +28,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7113d8c441eddfaeb5bdef",
+      "id": "bd7113d8c441eddfaeb5bdef",
       "name": "Waypoint: Write Functions with jQuery",
       "difficulty": 0.14,
       "challengeSeed": ["125658029"],
@@ -52,7 +52,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7114d8c441eddfaeb5bdef",
+      "id": "bd7114d8c441eddfaeb5bdef",
       "name": "Waypoint: Harness Dynamic HTML",
       "difficulty": 0.15,
       "challengeSeed": ["125658028"],
@@ -75,7 +75,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7115d8c441eddfaeb5bdef",
+      "id": "bd7115d8c441eddfaeb5bdef",
       "name": "Waypoint: Listen for jQuery Events",
       "difficulty": 0.16,
       "challengeSeed": ["125658027"],
@@ -98,7 +98,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7116d8c441eddfaeb5bdef",
+      "id": "bd7116d8c441eddfaeb5bdef",
       "name": "Waypoint: Trigger jQuery Effects",
       "difficulty": 0.17,
       "challengeSeed": ["125658025"],
diff --git a/seed/challenges/object-oriented-javascript.json b/seed/challenges/object-oriented-javascript.json
index cffaa033aa..75d0f83836 100644
--- a/seed/challenges/object-oriented-javascript.json
+++ b/seed/challenges/object-oriented-javascript.json
@@ -3,7 +3,7 @@
   "order" : 0.008,
   "challenges": [
     {
-      "_id": "bd7129d8c441eddfaeb5bddf",
+      "id": "bd7129d8c441eddfaeb5bddf",
       "name": "Waypoint: Scope Your Variables",
       "difficulty": 0.01,
       "challengeSeed": ["128836683"],
@@ -29,7 +29,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7131d8c441eddfaeb5bdbf",
+      "id": "bd7131d8c441eddfaeb5bdbf",
       "name": "Waypoint: Reference your Current Object with This",
       "difficulty": 0.03,
       "challengeSeed": ["128836508"],
@@ -55,7 +55,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7132d8c441eddfaeb5bdaf",
+      "id": "bd7132d8c441eddfaeb5bdaf",
       "name": "Waypoint: Traverse the Prototype Chain",
       "difficulty": 0.04,
       "challengeSeed": ["128836684"],
@@ -80,7 +80,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7133d8c441eddfaeb5bd0f",
+      "id": "bd7133d8c441eddfaeb5bd0f",
       "name": "Waypoint: Reuse Code with Decorators",
       "difficulty": 0.05,
       "challengeSeed": ["128836681"],
@@ -106,7 +106,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7134d8c441eddfaeb5bd1f",
+      "id": "bd7134d8c441eddfaeb5bd1f",
       "name": "Waypoint: Build Objects with Functional Classes",
       "difficulty": 0.06,
       "challengeSeed": ["128836503"],
@@ -132,7 +132,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7135d8c441eddfaeb5bd2f",
+      "id": "bd7135d8c441eddfaeb5bd2f",
       "name": "Waypoint: Build Objects with Prototypal Classes",
       "difficulty": 0.07,
       "challengeSeed": ["128836505"],
@@ -158,7 +158,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7136d8c441eddfaeb5bd3f",
+      "id": "bd7136d8c441eddfaeb5bd3f",
       "name": "Waypoint: Understand Pseudoclassical Patterns",
       "difficulty": 0.08,
       "challengeSeed": ["128836689"],
@@ -184,7 +184,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7136d8c441eddfaeb5bd4f",
+      "id": "bd7136d8c441eddfaeb5bd4f",
       "name": "Waypoint: Subclass one Object to Another",
       "difficulty": 0.09,
       "challengeSeed": ["128836686"],
@@ -209,7 +209,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7136d8c441eddfaeb5bd5f",
+      "id": "bd7136d8c441eddfaeb5bd5f",
       "name": "Waypoint: Use Pseudoclassical Subclasses",
       "difficulty": 0.10,
       "challengeSeed": ["128836937"],
diff --git a/seed/challenges/ziplines.json b/seed/challenges/ziplines.json
index 09392b2a66..01ade1969d 100644
--- a/seed/challenges/ziplines.json
+++ b/seed/challenges/ziplines.json
@@ -3,7 +3,7 @@
   "order": 0.012,
   "challenges": [
     {
-      "_id": "bd7158d8c442eddfbeb5bd1f",
+      "id": "bd7158d8c442eddfbeb5bd1f",
       "name": "Waypoint: Get Set for Ziplines",
       "difficulty": 1.00,
       "challengeSeed": ["125658022"],
@@ -36,7 +36,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd1f",
+      "id": "bd7158d8c442eddfaeb5bd1f",
       "name": "Zipline: Use the Twitch.tv JSON API",
       "difficulty": 1.01,
       "challengeSeed": ["126411564"],
@@ -71,7 +71,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd13",
+      "id": "bd7158d8c442eddfaeb5bd13",
       "name": "Zipline: Build a Random Quote Machine",
       "difficulty": 1.02,
       "challengeSeed": ["126415122"],
@@ -101,7 +101,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd10",
+      "id": "bd7158d8c442eddfaeb5bd10",
       "name": "Zipline: Show the Local Weather",
       "difficulty": 1.03,
       "challengeSeed": ["126415127"],
@@ -133,7 +133,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd18",
+      "id": "bd7158d8c442eddfaeb5bd18",
       "name": "Zipline: Stylize Stories on Camper News",
       "difficulty": 1.04,
       "challengeSeed": ["126415129"],
@@ -166,7 +166,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd19",
+      "id": "bd7158d8c442eddfaeb5bd19",
       "name": "Zipline: Wikipedia Viewer",
       "difficulty": 1.05,
       "challengeSeed": ["126415131"],
@@ -198,7 +198,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd0f",
+      "id": "bd7158d8c442eddfaeb5bd0f",
       "name": "Zipline: Build a Pomodoro Clock",
       "difficulty": 1.06,
       "challengeSeed": ["126411567"],
@@ -229,7 +229,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd17",
+      "id": "bd7158d8c442eddfaeb5bd17",
       "name": "Zipline: Build a JavaScript Calculator",
       "difficulty": 1.07,
       "challengeSeed": ["126411565"],
@@ -260,7 +260,7 @@
       "descriptionPt": []
     },
     {
-      "_id": "bd7158d8c442eddfaeb5bd1c",
+      "id": "bd7158d8c442eddfaeb5bd1c",
       "name": "Zipline: Build a Tic Tac Toe Game",
       "difficulty": 1.08,
       "challengeSeed": ["126415123"],
diff --git a/seed/field-guides.json b/seed/field-guides.json
index d241f8858b..261f166b0c 100644
--- a/seed/field-guides.json
+++ b/seed/field-guides.json
@@ -1,6 +1,6 @@
 [
   {
-    "_id": "bd7158d9c441eddfaeb5bdef",
+    "id": "bd7158d9c441eddfaeb5bdef",
     "name": "How do I use this guide?",
     "dashedName": "how-do-i-use-this-guide",
     "description": [
@@ -12,7 +12,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c441eddfaeb5bdff",
+    "id": "bd7158d9c441eddfaeb5bdff",
     "name": "What exactly is Free Code Camp?",
     "dashedName": "what-exactly-is-free-code-camp",
     "description": [
@@ -30,7 +30,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c441eddfaeb5bd1f",
+    "id": "bd7158d9c441eddfaeb5bd1f",
     "name": "Why do I need Free Code Camp?",
     "dashedName": "why-do-i-need-free-code-camp",
     "description": [
@@ -48,7 +48,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c441eddfaeb5bd2f",
+    "id": "bd7158d9c441eddfaeb5bd2f",
     "name": "What are the main advantages of Free Code Camp?",
     "dashedName": "what-are-the-main-advantages-of-free-code-camp",
     "description": [
@@ -65,7 +65,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c441eddfaeb5bd3f",
+    "id": "bd7158d9c441eddfaeb5bd3f",
     "name": "How does Free Code Camp work?",
     "dashedName": "how-does-free-code-camp-work",
     "description": [
@@ -87,7 +87,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c441eddfaeb5bd4f",
+    "id": "bd7158d9c441eddfaeb5bd4f",
     "name": "Will I really be able to get software engineering job after Free Code Camp?",
     "dashedName": "will-i-really-be-able-to-get-a-software-engineering-job-after-free-code-camp",
     "description": [
@@ -107,7 +107,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c440eddfaeb5bdef",
+    "id": "bd7158d9c440eddfaeb5bdef",
     "name": "What will I learn, and in what sequence?",
     "dashedName": "what-will-i-learn-and-in-what-sequence",
     "description": [
@@ -144,7 +144,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c434eddfaeb5bdef",
+    "id": "bd7158d9c434eddfaeb5bdef",
     "name": "How long does Free Code Camp take?",
     "dashedName": "how-long-does-free-code-camp-take",
     "description": [
@@ -182,7 +182,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c438eddfaeb5bdef",
+    "id": "bd7158d9c438eddfaeb5bdef",
     "name": "Why does Free Code Camp use JavaScript instead of Ruby or Python?",
     "dashedName": "why-does-free-code-camp-use-javascript-instead-of-ruby-or-python",
     "description": [
@@ -196,7 +196,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c437eddfaeb5bdef",
+    "id": "bd7158d9c437eddfaeb5bdef",
     "name": "What is pair programming, and why is it special?",
     "dashedName": "what-is-pair-programming-and-why-is-it-special",
     "description": [
@@ -209,7 +209,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd2f",
+    "id": "bd7158d9c436eddfaeb5bd2f",
     "name": "How do I get help when I get stuck?",
     "dashedName": "how-do-i-get-help-when-i-get-stuck",
     "description": [
@@ -232,7 +232,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd3f",
+    "id": "bd7158d9c436eddfaeb5bd3f",
     "name": "Can I jump around in this guide?",
     "dashedName": "can-i-jump-around-in-this-guide",
     "description": [
@@ -244,7 +244,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bdef",
+    "id": "bd7158d9c436eddfaeb5bdef",
     "name": "If Free Code Camp is free, how does it make money?",
     "dashedName": "if-free-code-camp-is-free-how-does-it-make-money",
     "description": [
@@ -257,7 +257,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c435eddfaeb5bdef",
+    "id": "bd7158d9c435eddfaeb5bdef",
     "name": "Does Free Code Camp have an application process?",
     "dashedName": "does-free-code-camp-have-an-application-process",
     "description": [
@@ -269,7 +269,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd3b",
+    "id": "bd7158d9c436eddfaeb5bd3b",
     "name": "How can I stream my live coding sessions on Free Code Camp's Twitch.tv channel?",
     "dashedName": "how-can-i-stream-my-live-coding-sessions-on-free-code-camps-twitch-tv-channel",
     "description": [
@@ -290,7 +290,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd3d",
+    "id": "bd7158d9c436eddfaeb5bd3d",
     "name": "How can I find other Free Code Camp campers in my city?",
     "dashedName": "how-can-i-find-other-free-code-camp-campers-in-my-city",
     "description": [
@@ -482,7 +482,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd3e",
+    "id": "bd7158d9c436eddfaeb5bd3e",
     "name": "Does Free Code Camp have an alumni network?",
     "dashedName": "does-free-code-camp-have-an-alumni-network",
     "description": [
@@ -492,7 +492,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c442eddfaeb5b2ef",
+    "id": "bd7158d9c442eddfaeb5b2ef",
     "name": "Why doesn't Free Code Camp teach technical interviewing skills?",
     "dashedName": "why-doesnt-free-code-camp-teach-technical-interviewing-skills",
     "description": [
@@ -508,7 +508,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c442eddfaeb5bdef",
+    "id": "bd7158d9c442eddfaeb5bdef",
     "name": "How do I best use the Global Control Shortcuts for Mac?",
     "dashedName": "how-do-i-best-use-the-global-control-shortcuts-for-mac",
     "description": [
@@ -533,7 +533,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c445eddfaeb5bdef",
+    "id": "bd7158d9c445eddfaeb5bdef",
     "name": "How can I get to Inbox Zero with Gmail shortcuts?",
     "dashedName": "how-can-i-get-to-inbox-zero-with-gmail-shortcuts",
     "description": [
@@ -562,7 +562,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c445eddfaeb5bdff",
+    "id": "bd7158d9c445eddfaeb5bdff",
     "name": "How can I deploy a website without writing any code at all?",
     "dashedName": "how-can-i-deploy-a-website-without-writing-any-code-at-all",
     "description": [
@@ -585,7 +585,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c446eddfaeb5bdef",
+    "id": "bd7158d9c446eddfaeb5bdef",
     "name": "How do Free Code Camp's Nonprofit Projects work?",
     "dashedName": "how-do-free-code-camps-nonprofit-projects-work",
     "description": [
@@ -660,7 +660,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c447eddfaeb5bdef",
+    "id": "bd7158d9c447eddfaeb5bdef",
     "name": "How do I install Screenhero?",
     "dashedName": "how-do-i-install-screenhero",
     "description": [
@@ -672,7 +672,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c451eddfaeb5bded",
+    "id": "bd7158d9c451eddfaeb5bded",
     "name": "What is the style guide for Bonfires?",
     "dashedName": "what-is-the-style-guide-for-bonfires",
     "description": [
@@ -708,7 +708,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c451eddfaeb5bdee",
+    "id": "bd7158d9c451eddfaeb5bdee",
     "name": "What is the Free Code Camp Code of Conduct?",
     "dashedName": "what-is-the-free-code-camp-code-of-conduct",
     "description": [
@@ -733,7 +733,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c451eddfaeb5bdef",
+    "id": "bd7158d9c451eddfaeb5bdef",
     "name": "What is the Free Code Camp Privacy Policy?",
     "dashedName": "what-is-the-free-code-camp-privacy-policy",
     "description": [
@@ -775,7 +775,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5bd3c",
+    "id": "bd7158d9c436eddfaeb5bd3c",
     "name": "How can I reach the Free Code Camp team to interview them for my publication?",
     "dashedName": "how-can-i-reach-the-free-code-camp-team-to-interview-them-for-my-publication",
     "description": [
@@ -794,7 +794,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfaeb5dd3b",
+    "id": "bd7158d9c436eddfaeb5dd3b",
     "name": "What other resources does Free Code Camp recommend to nonprofits?",
     "dashedName": "what-other-resources-does-free-code-camp-recommend-to-nonprofits",
     "description": [
@@ -836,7 +836,7 @@
     ]
   },
   {
-    "_id": "bd7158d9c436eddfadb5bd3e",
+    "id": "bd7158d9c436eddfadb5bd3e",
     "name": "How can I contribute to this guide?",
     "dashedName": "how-can-i-contribute-to-this-guide",
     "description": [
diff --git a/seed/future-jquery-ajax-json.json b/seed/future-jquery-ajax-json.json
index 4ceea2fafc..97d0504f04 100644
--- a/seed/future-jquery-ajax-json.json
+++ b/seed/future-jquery-ajax-json.json
@@ -3,7 +3,7 @@
   "order" : 0.004,
   "challenges": [
     {
-      "_id": "bad87fee1348bd9acdd08826",
+      "id": "bad87fee1348bd9acdd08826",
       "name": "Waypoint: Learn how Script Tags and Document Ready Work",
       "difficulty": 0.072,
       "description": [
@@ -25,7 +25,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aedc08826",
+      "id": "bad87fee1348bd9aedc08826",
       "name": "Waypoint: Target Elements by Selectors Using jQuery",
       "difficulty": 0.073,
       "description": [
@@ -41,7 +41,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aedb08826",
+      "id": "bad87fee1348bd9aedb08826",
       "name": "Waypoint: Target Elements by Class Using jQuery",
       "difficulty": 0.074,
       "description": [
@@ -57,7 +57,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aeda08826",
+      "id": "bad87fee1348bd9aeda08826",
       "name": "Waypoint: Target an element by ID Using jQuery",
       "difficulty": 0.075,
       "description": [
@@ -73,7 +73,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed908826",
+      "id": "bad87fee1348bd9aed908826",
       "name": "Waypoint: Change the CSS of an Element Using jQuery",
       "difficulty": 0.076,
       "description": [
@@ -89,7 +89,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed808826",
+      "id": "bad87fee1348bd9aed808826",
       "name": "Waypoint: Disable an Element Using jQuery",
       "difficulty": 0.077,
       "description": [
@@ -105,7 +105,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed708826",
+      "id": "bad87fee1348bd9aed708826",
       "name": "Waypoint: Remove an Element Using jQuery",
       "difficulty": 0.078,
       "description": [
@@ -121,7 +121,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed608826",
+      "id": "bad87fee1348bd9aed608826",
       "name": "Waypoint: Move an Element Using jQuery",
       "difficulty": 0.079,
       "description": [
@@ -137,7 +137,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed508826",
+      "id": "bad87fee1348bd9aed508826",
       "name": "Waypoint: Clone an Element Using jQuery",
       "difficulty": 0.080,
       "description": [
@@ -153,7 +153,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed408826",
+      "id": "bad87fee1348bd9aed408826",
       "name": "Waypoint: Animate an Element Using jQuery",
       "difficulty": 0.081,
       "description": [
@@ -169,7 +169,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed308826",
+      "id": "bad87fee1348bd9aed308826",
       "name": "Waypoint: Target the Parent of an Element Using jQuery",
       "difficulty": 0.082,
       "description": [
@@ -185,7 +185,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed208826",
+      "id": "bad87fee1348bd9aed208826",
       "name": "Waypoint: Target the Children of an Element Using jQuery",
       "difficulty": 0.083,
       "description": [
@@ -202,7 +202,7 @@
 
 
     {
-      "_id": "bad87fee1348bd9aed108826",
+      "id": "bad87fee1348bd9aed108826",
       "name": "Waypoint: Target a Specific Child of an Element Using jQuery",
       "difficulty": 0.084,
       "description": [
@@ -218,7 +218,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aed008826",
+      "id": "bad87fee1348bd9aed008826",
       "name": "Waypoint: Target Even Numbered Elements Using jQuery",
       "difficulty": 0.085,
       "description": [
@@ -234,7 +234,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aecc08826",
+      "id": "bad87fee1348bd9aecc08826",
       "name": "Waypoint: Read Data from an Element Using jQuery",
       "difficulty": 0.086,
       "description": [
@@ -250,7 +250,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9aebc08826",
+      "id": "bad87fee1348bd9aebc08826",
       "name": "Waypoint: Get Data from an URL Using jQuery",
       "difficulty": 0.087,
       "description": [
@@ -266,7 +266,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9ae9c08826",
+      "id": "bad87fee1348bd9ae9c08826",
       "name": "Waypoint: Loop through JSON Data Using jQuery",
       "difficulty": 0.089,
       "description": [
@@ -282,7 +282,7 @@
     },
 
     {
-      "_id": "bad87fee1348bd9ae8c08826",
+      "id": "bad87fee1348bd9ae8c08826",
       "name": "Waypoint: Setup Click Events Using jQuery",
       "difficulty": 0.089,
       "description": [
@@ -297,7 +297,7 @@
       "challengeType": 0
     },
     {
-      "_id": "bad87fee1348bd9aede08826",
+      "id": "bad87fee1348bd9aede08826",
       "name": "Waypoint: Use Hex Codes for Precise Colors",
       "difficulty": 0.071,
       "description": [
@@ -312,7 +312,7 @@
       "challengeType": 0
     },
     {
-      "_id": "bad87fee1348bd9aedd08826",
+      "id": "bad87fee1348bd9aedd08826",
       "name": "Waypoint: Use Shortened Hex Codes for Colors",
       "difficulty": 0.071,
       "description": [
diff --git a/seed/userMigration.js b/seed/userMigration.js
index c1b44d81fa..350a57ffe3 100644
--- a/seed/userMigration.js
+++ b/seed/userMigration.js
@@ -10,10 +10,10 @@ var User = require('../models/User.js'),
 mongoose.connect(secrets.db);
 
 var ziplineIds = ziplines.challenges.map(function(elem) {
-  return elem._id;
+  return elem.id;
 });
 var basejumpIds = basejumps.challenges.map(function(elem) {
-  return elem._id;
+  return elem.id;
 });
 var ziplineAndBaseJumpIds = R.concat(ziplineIds, basejumpIds);
 
@@ -81,14 +81,14 @@ function userModelMigration(cb) {
       newChallenges.forEach(function (challenge) {
         if (oldChallenges.indexOf(challenge.oldNumber) !== -1 && challenge.newId) {
           user.completedCoursewares.push({
-            _id: challenge.newId,
+            id: challenge.newId,
             completedDate: user.challengesHash[challenge.oldNumber] * 1000
           });
         }
       });
 
       user.completedCoursewares.forEach(function (course) {
-        var indexOfCourse = user.uncompletedCoursewares.indexOf(course._id) !== -1;
+        var indexOfCourse = user.uncompletedCoursewares.indexOf(course.id) !== -1;
         if (indexOfCourse !== -1) {
           user.uncompletedCoursewares.splice(indexOfCourse, 1);
         }
@@ -102,9 +102,9 @@ function userModelMigration(cb) {
     */
     user.needsMigration = false;
     user.completedChallenges = user.completedChallenges.map(function(elem) {
-      if (ziplineAndBaseJumpIds.indexOf(elem._id) > 0) {
+      if (ziplineAndBaseJumpIds.indexOf(elem.id) > 0) {
         return ({
-          _id: elem._id,
+          id: elem.id,
           name: elem.name,
           completedWith: elem.completedWith,
           completedDate: elem.completedDate,
diff --git a/server/boot/challenge.js b/server/boot/challenge.js
index 135523087b..0f51e203ab 100644
--- a/server/boot/challenge.js
+++ b/server/boot/challenge.js
@@ -82,7 +82,7 @@ module.exports = function(app) {
     return res.redirect('../challenges/learn-how-free-code-camp-works');
     }
     var completed = req.user.completedChallenges.map(function (elem) {
-      return elem._id;
+      return elem.id;
     });
 
     req.user.uncompletedChallenges = utils.allChallengeIds()
@@ -136,7 +136,7 @@ module.exports = function(app) {
     return res.redirect('../challenges/learn-how-free-code-camp-works');
     }
     var completed = req.user.completedChallenges.map(function (elem) {
-      return elem._id;
+      return elem.id;
     });
 
     req.user.uncompletedChallenges = utils.allChallengeIds()
@@ -203,13 +203,13 @@ module.exports = function(app) {
           return res.redirect('../challenges/' + dashedNameFull);
         } else if (req.user) {
           req.user.currentChallenge = {
-            challengeId: challenge._id,
+            challengeId: challenge.id,
             challengeName: challenge.name,
             challengeBlock: R.head(R.flatten(Object.keys(challengeMapWithIds).
                 map(function (key) {
                   return challengeMapWithIds[key]
                     .filter(function (elem) {
-                      return String(elem) === String(challenge._id);
+                      return String(elem) === String(challenge.id);
                     }).map(function () {
                       return key;
                     });
@@ -231,7 +231,7 @@ module.exports = function(app) {
               verb: utils.randomVerb(),
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               environment: utils.whichEnvironment(),
               challengeType: challenge.challengeType
             });
@@ -249,7 +249,7 @@ module.exports = function(app) {
               verb: utils.randomVerb(),
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               challengeType: challenge.challengeType
             });
           },
@@ -265,7 +265,7 @@ module.exports = function(app) {
               verb: utils.randomVerb(),
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               challengeType: challenge.challengeType
             });
           },
@@ -280,7 +280,7 @@ module.exports = function(app) {
               verb: utils.randomVerb(),
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               challengeType: challenge.challengeType
             });
           },
@@ -295,7 +295,7 @@ module.exports = function(app) {
               verb: utils.randomVerb(),
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               challengeType: challenge.challengeType
             });
           },
@@ -315,7 +315,7 @@ module.exports = function(app) {
               phrase: utils.randomPhrase(),
               compliment: utils.randomCompliment(),
               bonfires: challenge,
-              challengeId: challenge._id,
+              challengeId: challenge.id,
               MDNkeys: challenge.MDNlinks,
               MDNlinks: getMDNlinks(challenge.MDNlinks),
               challengeType: challenge.challengeType
@@ -365,18 +365,18 @@ module.exports = function(app) {
           }
 
           pairedWith.completedChallenges.push({
-            _id: challengeId,
+            id: challengeId,
             name: challengeName,
-            completedWith: req.user._id,
+            completedWith: req.user.id,
             completedDate: isCompletedDate,
             solution: isSolution,
             challengeType: 5
           });
 
           req.user.completedChallenges.push({
-            _id: challengeId,
+            id: challengeId,
             name: challengeName,
-            completedWith: pairedWith._id,
+            completedWith: pairedWith.id,
             completedDate: isCompletedDate,
             solution: isSolution,
             challengeType: 5
@@ -384,7 +384,7 @@ module.exports = function(app) {
         }
         // User said they paired, but pair wasn't found
         req.user.completedChallenges.push({
-          _id: challengeId,
+          id: challengeId,
           name: challengeName,
           completedWith: null,
           completedDate: isCompletedDate,
@@ -411,7 +411,7 @@ module.exports = function(app) {
       });
     } else {
       req.user.completedChallenges.push({
-        _id: challengeId,
+        id: challengeId,
         name: challengeName,
         completedWith: null,
         completedDate: isCompletedDate,
@@ -439,7 +439,7 @@ module.exports = function(app) {
     var challengeId = req.body.challengeInfo.challengeId;
 
     req.user.completedChallenges.push({
-      _id: challengeId,
+      id: challengeId,
       completedDate: isCompletedDate,
       name: req.body.challengeInfo.challengeName,
       solution: null,
@@ -495,9 +495,9 @@ module.exports = function(app) {
         var pairedWith = pairedWithFromMongo.pop();
 
         req.user.completedChallenges.push({
-          _id: challengeId,
+          id: challengeId,
           name: req.body.challengeInfo.challengeName,
-          completedWith: pairedWith._id,
+          completedWith: pairedWith.id,
           completedDate: isCompletedDate,
           solution: solutionLink,
           githubLink: githubLink,
@@ -508,7 +508,7 @@ module.exports = function(app) {
         req.user.save(function (err, user) {
           if (err) { return next(err); }
 
-          if (req.user._id.toString() === pairedWith._id.toString()) {
+          if (req.user.id.toString() === pairedWith.id.toString()) {
             return res.sendStatus(200);
           }
           index = pairedWith.uncompletedChallenges.indexOf(challengeId);
@@ -519,9 +519,9 @@ module.exports = function(app) {
           }
 
           pairedWith.completedChallenges.push({
-            _id: challengeId,
+            id: challengeId,
             name: req.body.challengeInfo.coursewareName,
-            completedWith: req.user._id,
+            completedWith: req.user.id,
             completedDate: isCompletedDate,
             solution: solutionLink,
             githubLink: githubLink,
@@ -541,7 +541,7 @@ module.exports = function(app) {
     } else {
 
       req.user.completedChallenges.push({
-        _id: challengeId,
+        id: challengeId,
         name: req.body.challengeInfo.challengeName,
         completedWith: null,
         completedDate: isCompletedDate,
diff --git a/server/boot/challengeMap.js b/server/boot/challengeMap.js
index 42261ac378..280768366c 100644
--- a/server/boot/challengeMap.js
+++ b/server/boot/challengeMap.js
@@ -29,7 +29,7 @@ module.exports = function(app) {
 
     var completedChallengeList = noDuplicatedChallenges
       .map(function(challenge) {
-        return challenge._id;
+        return challenge.id;
       });
     var challengeList = utils.
       getChallengeMapForDisplay(completedChallengeList);
@@ -37,7 +37,7 @@ module.exports = function(app) {
     Object.keys(challengeList).forEach(function(key) {
       challengeList[key].completed = challengeList[key]
         .challenges.filter(function(elem) {
-        return completedChallengeList.indexOf(elem._id) > -1;
+        return completedChallengeList.indexOf(elem.id) > -1;
       });
     });
 
diff --git a/server/boot/fieldGuide.js b/server/boot/fieldGuide.js
index 8cebbe461b..f30f7b73fc 100644
--- a/server/boot/fieldGuide.js
+++ b/server/boot/fieldGuide.js
@@ -57,7 +57,7 @@ module.exports = function(app) {
         }
         res.render('field-guide/show', {
           title: fieldGuide.name,
-          fieldGuideId: fieldGuide._id,
+          fieldGuideId: fieldGuide.id,
           description: fieldGuide.description.join('')
         });
       }
@@ -83,7 +83,7 @@ module.exports = function(app) {
     }
 
     var displayedFieldGuides =
-      FieldGuide.find({'_id': req.user.uncompletedFieldGuides[0]});
+      FieldGuide.find({'id': req.user.uncompletedFieldGuides[0]});
 
     displayedFieldGuides.exec(function(err, fieldGuide) {
       if (err) { return next(err); }
diff --git a/server/boot/story.js b/server/boot/story.js
index dbfaf936ca..3184a02141 100755
--- a/server/boot/story.js
+++ b/server/boot/story.js
@@ -184,7 +184,7 @@ module.exports = function(app) {
         rank: story.upVotes.length,
         upVotes: story.upVotes,
         comments: story.comments,
-        id: story._id,
+        id: story.id,
         timeAgo: moment(story.timePosted).fromNow(),
         image: story.image,
         page: 'show',
@@ -238,7 +238,7 @@ module.exports = function(app) {
 
   function upvote(req, res, next) {
     var data = req.body.data;
-    Story.find({'_id': data.id}, function(err, story) {
+    Story.find({'id': data.id}, function(err, story) {
       if (err) {
         return next(err);
       }
@@ -246,7 +246,7 @@ module.exports = function(app) {
       story.rank++;
       story.upVotes.push(
         {
-          upVotedBy: req.user._id,
+          upVotedBy: req.user.id,
           upVotedByUsername: req.user.username
         }
       );
@@ -280,7 +280,7 @@ module.exports = function(app) {
   function comments(req, res, next) {
     var data = req.params.id;
     Comment.find(
-      { where: {'_id': data } },
+      { where: {'id': data } },
       function(err, comment) {
         if (err) {
           return next(err);
@@ -396,12 +396,12 @@ module.exports = function(app) {
         }).replace(/&quot;/g, '"'),
         rank: 1,
         upVotes: [({
-          upVotedBy: req.user._id,
+          upVotedBy: req.user.id,
           upVotedByUsername: req.user.username
         })],
         author: {
           picture: req.user.picture,
-          userId: req.user._id,
+          userId: req.user.id,
           username: req.user.username,
           email: req.user.email
         },
@@ -453,7 +453,7 @@ module.exports = function(app) {
       upvotes: 0,
       author: {
         picture: req.user.picture,
-        userId: req.user._id,
+        userId: req.user.id,
         username: req.user.username,
         email: req.user.email
       },
@@ -495,7 +495,7 @@ module.exports = function(app) {
       originalStoryAuthorEmail: data.originalStoryAuthorEmail,
       author: {
         picture: req.user.picture,
-        userId: req.user._id,
+        userId: req.user.id,
         username: req.user.username,
         email: req.user.email
       },
@@ -514,7 +514,7 @@ module.exports = function(app) {
       }
       cmt = cmt.pop();
 
-      if (!req.user && cmt.author.userId !== req.user._id) {
+      if (!req.user && cmt.author.userId !== req.user.id) {
         return next(new Error('Not authorized'));
       }
 
@@ -558,7 +558,7 @@ module.exports = function(app) {
           }
           associatedContext = associatedContext.pop();
           if (associatedContext) {
-            associatedContext.comments.push(data._id);
+            associatedContext.comments.push(data.id);
             associatedContext.save(function (err) {
               if (err) {
                 return next(err);
diff --git a/server/boot/user.js b/server/boot/user.js
index 488997ea73..3d1d661baa 100644
--- a/server/boot/user.js
+++ b/server/boot/user.js
@@ -527,7 +527,7 @@ module.exports = function(app) {
                 return next(err);
               }
               updateUserStoryPictures(
-                user._id.toString(),
+                user.id.toString(),
                 user.picture,
                 user.username,
                 function(err) {
diff --git a/server/utils/index.js b/server/utils/index.js
index a0f082bd4a..18d8012ff6 100644
--- a/server/utils/index.js
+++ b/server/utils/index.js
@@ -78,7 +78,7 @@ module.exports = {
       challengeMapWithIds = {};
       Object.keys(challengeMap).forEach(function (key) {
         var onlyIds = challengeMap[key].challenges.map(function (elem) {
-          return elem._id;
+          return elem.id;
         });
         challengeMapWithIds[key] = onlyIds;
       });
@@ -147,7 +147,7 @@ module.exports = {
       return allFieldGuideIds;
     } else {
       allFieldGuideIds = fieldGuides.map(function (elem) {
-        return elem._id;
+        return elem.id;
       });
       return allFieldGuideIds;
     }
@@ -161,7 +161,7 @@ module.exports = {
         return {
           name: elem.name,
           dashedName: elem.dashedName,
-          id: elem._id
+          id: elem.id
         };
       });
       return allFieldGuideNames;
diff --git a/server/utils/middleware.js b/server/utils/middleware.js
index 6cc0810b6c..5d2d12741c 100644
--- a/server/utils/middleware.js
+++ b/server/utils/middleware.js
@@ -20,7 +20,7 @@ exports.userMigration = function userMigration(req, res, next) {
       req.user.completedBonfires.map(function (bonfire) {
         return ({
           completedDate: bonfire.completedDate,
-          _id: bonfire._id,
+          id: bonfire.id,
           name: bonfire.name,
           completedWith: bonfire.completedWith,
           solution: bonfire.solution,
diff --git a/server/views/challengeMap/show.jade b/server/views/challengeMap/show.jade
index 4c569263cb..edda59743b 100644
--- a/server/views/challengeMap/show.jade
+++ b/server/views/challengeMap/show.jade
@@ -82,7 +82,7 @@ block content
                         .col-xs-12
                             ol
                                 for challenge in challengeBlock.challenges
-                                    if completedChallengeList.indexOf(challenge._id) > -1
+                                    if completedChallengeList.indexOf(challenge.id) > -1
                                         .row
                                             .hidden-xs.col-sm-3.col-md-2.text-primary.ion-checkmark-circled.padded-ionic-icon.text-center.large-p.negative-10
                                             .col-xs-12.col-sm-9.col-md-10
diff --git a/server/views/stories/comments.jade b/server/views/stories/comments.jade
index f24917c86f..e8f1372df0 100755
--- a/server/views/stories/comments.jade
+++ b/server/views/stories/comments.jade
@@ -25,7 +25,7 @@
                           // todo
                             if (commentDetails.author.username === DF105CFA89562196E702912B3818C6A5B46E80D262442FDF29976621E5AF0D23) {
                               if ((Date.now() - commentDetails.commentOn) < 600000){
-                               editButton = "<a class='btn btn-no-shadow btn-primary btn-xs btn-primary-ghost edit-btn' id='" + commentDetails._id + "'>Edit</a> · ";
+                               editButton = "<a class='btn btn-no-shadow btn-primary btn-xs btn-primary-ghost edit-btn' id='" + commentDetails.id + "'>Edit</a> · ";
                               }
                             }
                             $(div)
@@ -36,12 +36,12 @@
                                                     '<img class="media-object img-news" src="' + commentDetails.author.picture +'" alt="' + commentDetails.author.username + '">' +
                                                 '</a>' +
                                             '</div>' +
-                                            '<div class="media-body comment_' + commentDetails._id + '">' +
+                                            '<div class="media-body comment_' + commentDetails.id + '">' +
                                                 '<div class="media-body-wrapper">' +
                                                     '<p>' + commentDetails.body + '</p>' +
                                                         '<h6>' +
                                                             '<div class="clearfix comment-a-comment negative-15">' +
-                                                                "<a class='btn btn-no-shadow btn-primary btn-xs btn-primary-ghost' id='" + commentDetails._id + "'>Reply</a> · " +
+                                                                "<a class='btn btn-no-shadow btn-primary btn-xs btn-primary-ghost' id='" + commentDetails.id + "'>Reply</a> · " +
                                                                 editButton +
                                                                 "commented " + moment(commentDetails.commentOn).fromNow() + " by " +
                                                                 "<a href='/" + commentDetails.author.username + "'>@" + commentDetails.author.username + "</a>" +
@@ -56,7 +56,7 @@
 
                             sentinel += commentDetails.comments.length;
 
-                            renderComments(commentDetails.comments, '.comment_' + commentDetails._id, ++level);
+                            renderComments(commentDetails.comments, '.comment_' + commentDetails.id, ++level);
 
                         },
                         complete: function () {
diff --git a/server/views/stories/index.jade b/server/views/stories/index.jade
index 14b63dbf5e..0204840763 100644
--- a/server/views/stories/index.jade
+++ b/server/views/stories/index.jade
@@ -3,7 +3,7 @@ block content
     if (user)
       script.
         var isLoggedIn = true;
-        var B3BA669EC5C1DD70FB478221E067A7E1B686929C569F5E73561B69C8F42129B = !{JSON.stringify(user._id)};
+        var B3BA669EC5C1DD70FB478221E067A7E1B686929C569F5E73561B69C8F42129B = !{JSON.stringify(user.id)};
         var DF105CFA89562196E702912B3818C6A5B46E80D262442FDF29976621E5AF0D23 = !{JSON.stringify(user.username)};
     else
       script.