Google Search Algorithms

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In September 2013, Google implemented the below Hummingbird algorithms to be focused on the 'context' and 'intent' of each word in a long tail search query.

1. Domain Age
2. Keyword Appears in Top Level Domain domain name
3. Keyword As First Word in Domain or end of their domain
4. Domain registration length
5. Keyword in Subdomain Name
6. Domain History
7. Exact Match Domain
8. Public vs. Private WhoIs
9. Penalized WhoIs Owner
10. Country TLD extension
11. Keyword in Title Tag
12. Title Tag Starts with Keyword
13. Keyword in Description Tag
14. Keyword Appears in H1 Tag
15. Keyword is Most Frequently Used Phrase in Document
16. Content Length
17. Keyword Density
18. Latent Semantic Indexing Keywords in Content (LSI)
19. LSI Keywords in Title and Description Tags
20. Page Loading Speed via HTML
21. Duplicate Content
22. Rel=Canonical
23. Page Loading Speed via Chrome
24. Image Optimization
25. Recency of Content Updates
26. Magnitude of Content Updates
27. Historical Updates Page Updates
28. Keyword Prominence
29. Keyword in H2, H3 Tags
30. Keyword Word Order
31. Outbound Link Quality
32. Outbound Link Theme
33. Grammar and Spelling
34. Syndicated Content
35. Helpful Supplementary Content
36. Number of Outbound Links
37. Multimedia
38. Number of Internal Links Pointing to Page
39. Quality of Internal Links Pointing to Page
40. Broken Links
41. Reading Level
42. Affiliate Links:
43. HTML errors/W3C validation
44. Page Host’s Domain Authority
45. Page’s PageRank
46. URL Length
47. URL Path
48. Human Editors
49. Page Category
50. WordPress Tags
51. Keyword in URL
52. URL String
53. References and Sources
54. Bullets and Numbered Lists
55. Priority of Page in Sitemap
56. Too Many Outbound Links
57. Quantity of Other Keywords Page Ranks For
58. Page Age
59. User Friendly Layout
60. Parked Domains
61. Useful Content
62. Content Provides Value and Unique Insights
63. Contact Us Page
64. Domain Trust/TrustRank
65. Site Architecture
66. Site Updates:
67. Number of Pages
68. Presence of Sitemap
69. Site Uptime
70. Server Location
71. SSL Certificate
72. Terms of Service and Privacy Pages
73. Duplicate Meta Information On-Site
74. Breadcrumb Navigation
75. Mobile Optimized
76. YouTube
77. Site Usability
78. Use of Google Analytics and Google Webmaster Tools
79. User reviews/Site reputation
80. Linking Domain Age
81. # of Linking Root Domains
82. # of Links from Separate C-Class IPs
83. # of Linking Pages
84. Alt Tag (for Image Links)
85. Links from .edu or .gov Domains
86. Authority of Linking Page
87. Authority of Linking Domain
88. Links From Competitors
89. Social Shares of Referring Page
90. Links from Bad Neighborhoods
91. Guest Posts
92. Links to Homepage Domain that Page Sits On
93. Nofollow Links
94. Diversity of Link Types
95. “Sponsored Links” Or Other Words Around Link
97. Excessive 301 Redirects to Page
98. Backlink Anchor Text
99. Internal Link Anchor Text
100. Link Title Attribution
101. Country TLD of Referring Domain
102. Link Location In Content
103. Link Location on Page
104. Linking Domain Relevancy
105. Page Level Relevancy
106. Text Around Link Sentiment
107. Keyword in Title
108. Positive Link Velocity
109. Negative Link Velocity
110. Links from “Hub” Pages
111. Link from Authority Sites
112. Linked to as Wikipedia Source
113. Co-Occurrences
114. Backlink Age
115. Links from Real Sites vs. Splogs
116. Natural Link Profile
117. Reciprocal Links
118. User Generated Content Links
119. Links from 301
120. Schema.org Microformats
121. DMOZ Listed
122. TrustRank of Linking Site
123. Number of Outbound Links on Page
124. Forum Profile Links
125. Word Count of Linking Content
126. Quality of Linking Content
127. Sitewide Links
128. Organic Click Through Rate for a Keyword
129. Organic CTR for All Keywords
130. Bounce Rate
131. Direct Traffic
132. Repeat Traffic
133. Blocked Sites
134. Chrome Bookmarks
135. Google Toolbar Data
136. Number of Comments
137. Dwell Time
138. Query Deserves Freshness
139. Query Deserves Diversity
140. User Browsing History
141. User Search History
142. Geo Targeting
143. Safe Search
144. Google+ Circles
145. DMCA Complaints
146. Domain Diversity
147. Transactional Searches
148. Local Searches
149. Google News Box
150. Big Brand Preference
151. Shopping Results
152. Image Results
153. Easter Egg Results
154. Single Site Results for Brands
155. Number of Tweets
156. Authority of Twitter Users Accounts
157. Number of Facebook Likes
158. Facebook Shares
159. Authority of Facebook User Accounts
160. Pinterest Pins
161. Votes on Social Sharing Sites
162. Number of Google+1’s
163. Authority of Google+ User Accounts
164. Known Authorship
165. Social Signal Relevancy
166. Site Level Social Signals
167. Brand Name Anchor Text
168. Branded Searches
169. Site Has Facebook Page and Likes
170. Site has Twitter Profile with Followers
171. Official Linkedin Company Page
172. Employees Listed at Linkedin
173. Legitimacy of Social Media Accounts
174. Brand Mentions on News Sites
175. Co-Citations
176. Number of RSS Subscribers
177. Brick and Mortar Location With Google+ Local Listing
178. Website is Tax Paying Business
179. Panda Penalty
180. Links to Bad Neighborhoods
181. Redirects
182. Popups or Distracting Ads
183. Site Over-Optimization
184. Page Over-Optimization
185. Ads Above the Fold
186. Hiding Affiliate Links
187. Affiliate Sites
188. Autogenerated Content
189. Excess PageRank Sculpting
190. IP Address Flagged as Spam
191. Meta Tag Spamming
192. Unnatural Influx of Links
193. Penguin Penalty
194. Link Profile with High % of Low Quality Links
195. Linking Domain Relevancy
196. Unnatural Links Warning
197. Links from the Same Class C IP
198. “Poison” Anchor Text
199. Manual Penalty
200. Selling Links
201. Google Sandbox
202. Google Dance
203. Disavow Tool
204. Reconsideration Request
205. Temporary Link Schemes