diff --git a/Gemfile b/Gemfile
index e5355f91c..55f1cff9f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,6 +12,8 @@ group :development do
   gem "mocha-on-bacon"
   gem "rake"
   gem 'prettybacon', :git => 'https://github.com/irrationalfab/PrettyBacon.git', :branch => 'master'
+  gem 'vcr'
+  gem 'webmock'
   if RUBY_VERSION >= '1.9.3'
     gem 'rubocop'
   end
diff --git a/Gemfile.lock b/Gemfile.lock
index e44a67488..79a77181a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,6 +30,7 @@ GEM
     activesupport (3.2.15)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
+    addressable (2.3.5)
     ast (1.1.0)
     awesome_print (1.2.0)
     bacon (1.2.0)
@@ -40,6 +41,8 @@ GEM
       simplecov (>= 0.7)
       term-ansicolor
       thor
+    crack (0.4.1)
+      safe_yaml (~> 0.9.0)
     docile (1.1.1)
     ffi (1.9.3)
     fuzzy_match (2.0.4)
@@ -86,6 +89,7 @@ GEM
       parser (~> 2.0)
       powerpack (~> 0.0.6)
       rainbow (>= 1.1.4)
+    safe_yaml (0.9.7)
     simplecov (0.8.2)
       docile (~> 1.1.0)
       multi_json
@@ -96,6 +100,10 @@ GEM
       tins (~> 0.8)
     thor (0.18.1)
     tins (0.13.1)
+    vcr (2.5.0)
+    webmock (1.8.11)
+      addressable (>= 2.2.7)
+      crack (>= 0.1.7)
     yajl-ruby (1.1.0)
     yard (0.8.7.3)
 
@@ -119,4 +127,6 @@ DEPENDENCIES
   rb-fsevent
   redcarpet
   rubocop
+  vcr
+  webmock
   yard
diff --git a/lib/cocoapods-core/github.rb b/lib/cocoapods-core/github.rb
index 4f025b85e..f5555e318 100644
--- a/lib/cocoapods-core/github.rb
+++ b/lib/cocoapods-core/github.rb
@@ -93,8 +93,16 @@ def self.repo_id_from_url(url)
     def self.peform_request(url)
       require 'rest'
       require 'json'
-      response = REST.get(url)
-      JSON.parse(response.body)
+      headers = { "User-Agent" => "CocoaPods" }
+      response = REST.get(url, headers)
+      body = JSON.parse(response.body)
+      if response.ok?
+        body
+      else
+        CoreUI.warn "Request to #{url} failed - #{response.status_code}"
+        CoreUI.warn body['message']
+        nil
+      end
     end
 
     #-------------------------------------------------------------------------#
diff --git a/spec/fixtures/vcr_cassettes/GitHub.yml b/spec/fixtures/vcr_cassettes/GitHub.yml
new file mode 100644
index 000000000..a611c873e
--- /dev/null
+++ b/spec/fixtures/vcr_cassettes/GitHub.yml
@@ -0,0 +1,300 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: https://api.github.com/users/CocoaPods
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:04 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 200 OK
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '56'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      Cache-Control:
+      - public, max-age=60, s-maxage=60
+      Last-Modified:
+      - Mon, 02 Dec 2013 03:04:32 GMT
+      Etag:
+      - '"7c5326bd9d92429d246d5d8c00dc5aa7"'
+      Vary:
+      - Accept
+      - Accept-Encoding
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DED:163085:529BF994
+    body:
+      encoding: UTF-8
+      string: '{"login":"CocoaPods","id":1189714,"avatar_url":"https://1.gravatar.com/avatar/8b374a26ac900a5c7b83a8767faff333?d=https%3A%2F%2Fidenticons.github.com%2F1fd372e5b4f8bdd18cd73236213f3abb.png&r=x","gravatar_id":"8b374a26ac900a5c7b83a8767faff333","url":"https://api.github.com/users/CocoaPods","html_url":"https://github.com/CocoaPods","followers_url":"https://api.github.com/users/CocoaPods/followers","following_url":"https://api.github.com/users/CocoaPods/following{/other_user}","gists_url":"https://api.github.com/users/CocoaPods/gists{/gist_id}","starred_url":"https://api.github.com/users/CocoaPods/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CocoaPods/subscriptions","organizations_url":"https://api.github.com/users/CocoaPods/orgs","repos_url":"https://api.github.com/users/CocoaPods/repos","events_url":"https://api.github.com/users/CocoaPods/events{/privacy}","received_events_url":"https://api.github.com/users/CocoaPods/received_events","type":"Organization","site_admin":false,"name":"","company":null,"blog":"http://twitter.com/CocoaPods","location":"","email":null,"hireable":null,"bio":null,"public_repos":21,"followers":0,"following":0,"created_at":"2011-11-12T01:44:28Z","updated_at":"2013-12-02T03:04:32Z","public_gists":0}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:04 GMT
+- request:
+    method: get
+    uri: https://api.github.com/repos/CocoaPods/CocoaPods
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:05 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 200 OK
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '55'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      Cache-Control:
+      - public, max-age=60, s-maxage=60
+      Last-Modified:
+      - Sun, 01 Dec 2013 22:30:59 GMT
+      Etag:
+      - '"d3e819c6c16641dab7afc83a9d5b5ad3"'
+      Vary:
+      - Accept
+      - Accept-Encoding
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DF3:48CEC0C:529BF995
+    body:
+      encoding: UTF-8
+      string: '{"id":2203645,"name":"CocoaPods","full_name":"CocoaPods/CocoaPods","owner":{"login":"CocoaPods","id":1189714,"avatar_url":"https://2.gravatar.com/avatar/8b374a26ac900a5c7b83a8767faff333?d=https%3A%2F%2Fidenticons.github.com%2F1fd372e5b4f8bdd18cd73236213f3abb.png&r=x","gravatar_id":"8b374a26ac900a5c7b83a8767faff333","url":"https://api.github.com/users/CocoaPods","html_url":"https://github.com/CocoaPods","followers_url":"https://api.github.com/users/CocoaPods/followers","following_url":"https://api.github.com/users/CocoaPods/following{/other_user}","gists_url":"https://api.github.com/users/CocoaPods/gists{/gist_id}","starred_url":"https://api.github.com/users/CocoaPods/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CocoaPods/subscriptions","organizations_url":"https://api.github.com/users/CocoaPods/orgs","repos_url":"https://api.github.com/users/CocoaPods/repos","events_url":"https://api.github.com/users/CocoaPods/events{/privacy}","received_events_url":"https://api.github.com/users/CocoaPods/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/CocoaPods/CocoaPods","description":"The
+        Objective-C library dependency manager.","fork":false,"url":"https://api.github.com/repos/CocoaPods/CocoaPods","forks_url":"https://api.github.com/repos/CocoaPods/CocoaPods/forks","keys_url":"https://api.github.com/repos/CocoaPods/CocoaPods/keys{/key_id}","collaborators_url":"https://api.github.com/repos/CocoaPods/CocoaPods/collaborators{/collaborator}","teams_url":"https://api.github.com/repos/CocoaPods/CocoaPods/teams","hooks_url":"https://api.github.com/repos/CocoaPods/CocoaPods/hooks","issue_events_url":"https://api.github.com/repos/CocoaPods/CocoaPods/issues/events{/number}","events_url":"https://api.github.com/repos/CocoaPods/CocoaPods/events","assignees_url":"https://api.github.com/repos/CocoaPods/CocoaPods/assignees{/user}","branches_url":"https://api.github.com/repos/CocoaPods/CocoaPods/branches{/branch}","tags_url":"https://api.github.com/repos/CocoaPods/CocoaPods/tags","blobs_url":"https://api.github.com/repos/CocoaPods/CocoaPods/git/blobs{/sha}","git_tags_url":"https://api.github.com/repos/CocoaPods/CocoaPods/git/tags{/sha}","git_refs_url":"https://api.github.com/repos/CocoaPods/CocoaPods/git/refs{/sha}","trees_url":"https://api.github.com/repos/CocoaPods/CocoaPods/git/trees{/sha}","statuses_url":"https://api.github.com/repos/CocoaPods/CocoaPods/statuses/{sha}","languages_url":"https://api.github.com/repos/CocoaPods/CocoaPods/languages","stargazers_url":"https://api.github.com/repos/CocoaPods/CocoaPods/stargazers","contributors_url":"https://api.github.com/repos/CocoaPods/CocoaPods/contributors","subscribers_url":"https://api.github.com/repos/CocoaPods/CocoaPods/subscribers","subscription_url":"https://api.github.com/repos/CocoaPods/CocoaPods/subscription","commits_url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits{/sha}","git_commits_url":"https://api.github.com/repos/CocoaPods/CocoaPods/git/commits{/sha}","comments_url":"https://api.github.com/repos/CocoaPods/CocoaPods/comments{/number}","issue_comment_url":"https://api.github.com/repos/CocoaPods/CocoaPods/issues/comments/{number}","contents_url":"https://api.github.com/repos/CocoaPods/CocoaPods/contents/{+path}","compare_url":"https://api.github.com/repos/CocoaPods/CocoaPods/compare/{base}...{head}","merges_url":"https://api.github.com/repos/CocoaPods/CocoaPods/merges","archive_url":"https://api.github.com/repos/CocoaPods/CocoaPods/{archive_format}{/ref}","downloads_url":"https://api.github.com/repos/CocoaPods/CocoaPods/downloads","issues_url":"https://api.github.com/repos/CocoaPods/CocoaPods/issues{/number}","pulls_url":"https://api.github.com/repos/CocoaPods/CocoaPods/pulls{/number}","milestones_url":"https://api.github.com/repos/CocoaPods/CocoaPods/milestones{/number}","notifications_url":"https://api.github.com/repos/CocoaPods/CocoaPods/notifications{?since,all,participating}","labels_url":"https://api.github.com/repos/CocoaPods/CocoaPods/labels{/name}","releases_url":"https://api.github.com/repos/CocoaPods/CocoaPods/releases{/id}","created_at":"2011-08-14T00:10:53Z","updated_at":"2013-12-01T22:30:59Z","pushed_at":"2013-11-29T13:12:21Z","git_url":"git://github.com/CocoaPods/CocoaPods.git","ssh_url":"git@github.com:CocoaPods/CocoaPods.git","clone_url":"https://github.com/CocoaPods/CocoaPods.git","svn_url":"https://github.com/CocoaPods/CocoaPods","homepage":"cocoapods.org","size":41271,"stargazers_count":3394,"watchers_count":3394,"language":"Ruby","has_issues":true,"has_downloads":true,"has_wiki":true,"forks_count":486,"mirror_url":null,"open_issues_count":140,"forks":486,"open_issues":140,"watchers":3394,"default_branch":"master","master_branch":"master","organization":{"login":"CocoaPods","id":1189714,"avatar_url":"https://2.gravatar.com/avatar/8b374a26ac900a5c7b83a8767faff333?d=https%3A%2F%2Fidenticons.github.com%2F1fd372e5b4f8bdd18cd73236213f3abb.png&r=x","gravatar_id":"8b374a26ac900a5c7b83a8767faff333","url":"https://api.github.com/users/CocoaPods","html_url":"https://github.com/CocoaPods","followers_url":"https://api.github.com/users/CocoaPods/followers","following_url":"https://api.github.com/users/CocoaPods/following{/other_user}","gists_url":"https://api.github.com/users/CocoaPods/gists{/gist_id}","starred_url":"https://api.github.com/users/CocoaPods/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/CocoaPods/subscriptions","organizations_url":"https://api.github.com/users/CocoaPods/orgs","repos_url":"https://api.github.com/users/CocoaPods/repos","events_url":"https://api.github.com/users/CocoaPods/events{/privacy}","received_events_url":"https://api.github.com/users/CocoaPods/received_events","type":"Organization","site_admin":false},"network_count":486,"subscribers_count":236}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:05 GMT
+- request:
+    method: get
+    uri: https://api.github.com/repos/CocoaPods/CocoaPods/tags
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:05 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 200 OK
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '54'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      Cache-Control:
+      - public, max-age=60, s-maxage=60
+      Last-Modified:
+      - Sun, 01 Dec 2013 22:30:59 GMT
+      Etag:
+      - '"d3e819c6c16641dab7afc83a9d5b5ad3"'
+      Vary:
+      - Accept
+      - Accept-Encoding
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DF2:2F2F539:529BF995
+    body:
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+      string: '[{"name":"local_repos","commit":{"sha":"4064048df16c203554f6630626b4c5c239ee8fe1","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/4064048df16c203554f6630626b4c5c239ee8fe1"}},{"name":"master","commit":{"sha":"0e1d101dc18ee569d0a181c2e7f39940c7b598d1","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/0e1d101dc18ee569d0a181c2e7f39940c7b598d1"}},{"name":"pods-project-edit-feature","commit":{"sha":"93b38c13ec3a084a71bc18717745208577f49cc9","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/93b38c13ec3a084a71bc18717745208577f49cc9"}},{"name":"refactor-target","commit":{"sha":"4ce0471a93629128d26f8b147f55600e6e87a89b","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/4ce0471a93629128d26f8b147f55600e6e87a89b"}},{"name":"ruby-trace-experiment","commit":{"sha":"efe30b868865af10d810f5b5c908cf634ce7d8c0","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/efe30b868865af10d810f5b5c908cf634ce7d8c0"}},{"name":"sandbox_reorganization_544","commit":{"sha":"e3cfdfd612eefc79e835f71c3a15e93a7a1701eb","url":"https://api.github.com/repos/CocoaPods/CocoaPods/commits/e3cfdfd612eefc79e835f71c3a15e93a7a1701eb"}}]'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:06 GMT
+- request:
+    method: get
+    uri: https://api.github.com/repos/CocoaPods/Missing_Repo
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 404
+      message: Not Found
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:17:50 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 404 Not Found
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '48'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:263F:5D84D5C:529BFBDE
+    body:
+      encoding: UTF-8
+      string: '{"message":"Not Found","documentation_url":"http://developer.github.com/v3"}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:17:50 GMT
+recorded_with: VCR 2.5.0
diff --git a/spec/fixtures/vcr_cassettes/Specification_Set_Statistics.yml b/spec/fixtures/vcr_cassettes/Specification_Set_Statistics.yml
new file mode 100644
index 000000000..485dfe042
--- /dev/null
+++ b/spec/fixtures/vcr_cassettes/Specification_Set_Statistics.yml
@@ -0,0 +1,159 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: https://api.github.com/repos/example.com/repo.git
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 404
+      message: Not Found
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:00 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 404 Not Found
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '59'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DF1:1A54937:529BF990
+    body:
+      encoding: UTF-8
+      string: '{"message":"Not Found","documentation_url":"http://developer.github.com/v3"}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:00 GMT
+- request:
+    method: get
+    uri: https://api.github.com/repos/example.com/repo.git
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 404
+      message: Not Found
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:01 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 404 Not Found
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '58'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DF0:D8071C:529BF991
+    body:
+      encoding: UTF-8
+      string: '{"message":"Not Found","documentation_url":"http://developer.github.com/v3"}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:01 GMT
+- request:
+    method: get
+    uri: https://api.github.com/repos/example.com/repo.git
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      User-Agent:
+      - CocoaPods
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - '*/*'
+  response:
+    status:
+      code: 404
+      message: Not Found
+    headers:
+      Server:
+      - GitHub.com
+      Date:
+      - Mon, 02 Dec 2013 03:08:02 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Status:
+      - 404 Not Found
+      X-Ratelimit-Limit:
+      - '60'
+      X-Ratelimit-Remaining:
+      - '57'
+      X-Ratelimit-Reset:
+      - '1385957280'
+      X-Github-Media-Type:
+      - github.beta
+      X-Content-Type-Options:
+      - nosniff
+      Access-Control-Allow-Credentials:
+      - 'true'
+      Access-Control-Expose-Headers:
+      - ETag, Link, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes,
+        X-Accepted-OAuth-Scopes, X-Poll-Interval
+      Access-Control-Allow-Origin:
+      - '*'
+      X-Github-Request-Id:
+      - 4F00B20F:4DF2:2F2F3D6:529BF991
+    body:
+      encoding: UTF-8
+      string: '{"message":"Not Found","documentation_url":"http://developer.github.com/v3"}'
+    http_version: 
+  recorded_at: Mon, 02 Dec 2013 03:08:02 GMT
+recorded_with: VCR 2.5.0
diff --git a/spec/github_spec.rb b/spec/github_spec.rb
index b0b5f31b2..c53d3b046 100644
--- a/spec/github_spec.rb
+++ b/spec/github_spec.rb
@@ -3,82 +3,80 @@
 module Pod
   describe GitHub do
 
-    def stub_github_request(url, response_body)
-      require 'rest'
-      response = mock(:body => response_body)
-      REST.expects(:get).with(url).returns(response)
-    end
-
     describe "In general" do
       it "returns the information of a user" do
-        stub_github_request('https://api.github.com/users/CocoaPods', '{"login":"CocoaPods"}')
-        user = GitHub.user("CocoaPods")
-        user['login'].should == 'CocoaPods'
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          user = GitHub.user("CocoaPods")
+          user['login'].should == 'CocoaPods'
+        end
       end
 
       it "returns the information of a repo" do
-        stub_github_request('https://api.github.com/repos/CocoaPods/CocoaPods', '{"name":"CocoaPods"}')
-        repo = GitHub.repo("https://github.com/CocoaPods/CocoaPods")
-        repo['name'].should == 'CocoaPods'
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          repo = GitHub.repo("https://github.com/CocoaPods/CocoaPods")
+          repo['name'].should == 'CocoaPods'
+        end
       end
 
       it "returns the tags of a repo" do
-        stub_github_request('https://api.github.com/repos/CocoaPods/CocoaPods/tags', '[{"name":"0.20.2"}]')
-        tags = GitHub.tags("https://github.com/CocoaPods/CocoaPods")
-        tags.find { |t| t["name"] == "0.20.2" }.should.not.be.nil
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          tags = GitHub.tags("https://github.com/CocoaPods/CocoaPods")
+          tags.find { |t| t["name"] == "0.20.2" }.should.not.be.nil
+        end
       end
 
       it "returns the branches of a repo" do
-        stub_github_request('https://api.github.com/repos/CocoaPods/CocoaPods/branches', '[{"name":"master"}]')
-        branches = GitHub.branches("https://github.com/CocoaPods/CocoaPods")
-        branches.find { |t| t["name"] == "master" }.should.not.be.nil
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          branches = GitHub.branches("https://github.com/CocoaPods/CocoaPods")
+          branches.find { |t| t["name"] == "master" }.should.not.be.nil
+        end
       end
     end
 
     #-------------------------------------------------------------------------#
 
-    describe "Private helpers" do
-
-      describe "#normalized_repo_id" do
-
-        it "returns a repo id as it is" do
-          id = GitHub.send(:normalized_repo_id, "CocoaPods/CocoaPods")
-          id.should == "CocoaPods/CocoaPods"
+    describe "Additional behaviour" do
+      it "sets the user agent" do
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          url = 'https://api.github.com/repos/CocoaPods/CocoaPods'
+          headers = {'User-Agent' => 'CocoaPods'}
+          response = stub(:body => '{}', :ok? => true)
+          REST.expects(:get).with(url, headers).returns(response)
+          repo = GitHub.repo("http://github.com/CocoaPods/CocoaPods")
         end
+      end
 
-        it "convertns an url to a repo id" do
-          id = GitHub.send(:normalized_repo_id, "https://github.com/CocoaPods/CocoaPods")
-          id.should == "CocoaPods/CocoaPods"
+      it "supports URLs with the `http` protocol" do
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          repo = GitHub.repo("http://github.com/CocoaPods/CocoaPods")
+          repo['name'].should == 'CocoaPods'
         end
-
       end
 
-      #----------------------------------------#
-
-      describe "#repo_id_from_url" do
-
-        it "returns the repo id from a given github URL" do
-          id = GitHub.send(:repo_id_from_url, "https://github.com/CocoaPods/CocoaPods")
-          id.should == "CocoaPods/CocoaPods"
+      it "supports the GitHub identifier instead of the URL" do
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          repo = GitHub.repo("CocoaPods/CocoaPods")
+          repo['name'].should == 'CocoaPods'
         end
+      end
 
-        it "returns the repo id from a given github https git URL" do
-          id = GitHub.send(:repo_id_from_url, "https://github.com/CocoaPods/CocoaPods.git")
-          id.should == "CocoaPods/CocoaPods"
+      it "returns nil if a requests fails" do
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          repo = GitHub.repo("https://github.com/CocoaPods/Missing_Repo")
+          repo.should.be.nil
         end
+      end
 
-        it "returns nil if the given url is not a valid github URL" do
-          id = GitHub.send(:repo_id_from_url, "CocoaPods/CocoaPods")
-          id.should.be.nil
+      it "prints a warning for failed requests" do
+        VCR.use_cassette('GitHub', :record => :new_episodes) do
+          GitHub.repo("https://github.com/CocoaPods/Missing_Repo")
+          CoreUI.warnings.should.match /Request to https:.*Missing_Repo failed - 404/
+          CoreUI.warnings.should.match /Not Found/
         end
-
       end
 
-      #----------------------------------------#
+      #-----------------------------------------------------------------------#
 
     end
-
-    #-------------------------------------------------------------------------#
-
   end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index e9daf05f6..a9ca16047 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -47,6 +47,15 @@ def copy_fixture_to_pod(name, pod)
   FileUtils.cp_r(path, pod.root)
 end
 
+# VCR
+#--------------------------------------#
+
+require 'vcr'
+VCR.configure do |c|
+  c.cassette_library_dir = ROOT + 'spec/fixtures/vcr_cassettes'
+  c.hook_into :webmock
+end
+
 # Silence the output
 #--------------------------------------#
 
diff --git a/spec/specification/set/statistics_spec.rb b/spec/specification/set/statistics_spec.rb
index ea48b2b8a..0b09b9fdd 100644
--- a/spec/specification/set/statistics_spec.rb
+++ b/spec/specification/set/statistics_spec.rb
@@ -44,10 +44,12 @@ module Pod
       end
 
       it "returns nil for GitHub based methods if the Pod is not hosted by GitHub" do
-        Specification.any_instance.stubs(:source).returns({:git => 'example.com/repo.git'})
-        @stats.github_watchers(@set).should  == nil
-        @stats.github_forks(@set).should     == nil
-        @stats.github_pushed_at(@set).should == nil
+        VCR.use_cassette('Specification::Set::Statistics', :record => :new_episodes) do
+          Specification.any_instance.stubs(:source).returns({:git => 'example.com/repo.git'})
+          @stats.github_watchers(@set).should  == nil
+          @stats.github_forks(@set).should     == nil
+          @stats.github_pushed_at(@set).should == nil
+        end
       end
     end