I've tried to compile a list of Google's ranking factor 2013. There were many things which might not look like a Google's algorithm Terminology.
1. Keywords in Title Tag
2. Title Tag Starts with Keyword
3. Keyword in Description Tag
4. Keyword Appears in H1 Tag
5. Keyword is Most Frequently Used Phrase in Document
6. Content Length
7. Keyword Density
8. LSI Keywords in Content
9. LSI Keywords in Title and Description Tags
10. Page Loading Speed via HTML
11. Domain Age
12. Keyword Appears in Top Level Domain
13. Keyword As First Word in Domain
14. Domain registration length
15. Keyword in Sub-domain Name
16. Domain History
17. Exact Match Domain
18. Public vs. Private WhoIs
19. Penalized WhoIs Owner
20. Country level TLD extension
21. Magnitude of Content Updates
22. Historical Updates Page Updates
23. Keyword Prominence
24. Keyword in H2, H3 Tags
25. Keyword Word Order
26. Duplicate Content
27. Rel=Canonical
28. Page Loading Speed via Chrome
29. Image Optimization
30. Recency of Content Updates
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/WC3 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. Content Provides Value and Unique Insights
62. Contact Us Page
63. Domain Trust/TrustRank
64. Site Architecture
65. Site Updates
66. Number of Pages
67. Presence of Sitemap
68. Site Uptime
69. Server Location
70. SSL Certificate (Ecommerce Sites)
71. Terms of Service and Privacy Pages
72. Duplicate Content On-Site
73. Breadcrumb Navigation
74. Mobile Optimized
75. YouTube
76. Site Usability
77. Use of Google Analytics and Google Webmaster Tools
78. User reviews/Site reputation
79. Linking Domain Age
80. # of Linking Root Domains
81. # of Links from Separate C-Class IPs
82. # of Linking Pages
83. Alt Tag (for Image Links)
84. Links from .edu or .gov Domains
85. PR of Linking Page
86. Authority of Linking Domain
87. Links From Competitors
88. Social Shares of Referring Page
89. Links from Bad Neighborhoods
90. Guest Posts
91. Links to Homepage Domain that Page Sits On
92. Nofollow Links
93. Diversity of Link Types
94. “Advertised Links” Or Other Words Sponsored Link
95. Contextual Links
96. Excessive 301 Redirects to Page
97. Backlink Anchor Text
98. Internal Link Anchor Text
99. Link Title Attribution
100. Country TLD of Referring Domain
101. Link Location In Content
102. Link Location on Page
103. Linking Domain Relevancy
104. Page Level Relevancy
105. Text Around Link Sentiment
106. Keyword in Title
107. Positive Link Velocity
108. Negative Link Velocity
109. Links from “Hub” Pages
110. Link from Authority Sites
111. Linked to as Wikipedia Source
112. Co-Occurrences
113. Backlink Age
114. Links from Real Sites vs. Splogs
115. Natural Link Profile
116. Reciprocal Links
117. User Generated Content Links
118. Links from 301
119. Schema.org Microformats
120. DMOZ Listed
121. Yahoo! Directory Listed
122. Number of Outbound Links on Page
123. Forum Profile Links
124. Word Count of Linking Content
125. Quality of Linking Content
127. Organic Click Through Rate for a Keyword
128. Organic CTR for All Keywords
129. Bounce Rate
130. Direct Traffic
131. Repeat Traffic
132. Blocked Sites
133. Chrome Bookmarks
134. Google Toolbar Data
135. Number of Comments
136. Time on Site
137. Query Deserves Freshness
138. Query Deserves Diversity
139. User Browsing History
140. User Search History
141. Geo Targeting
142. Safe Search
143. Google+ Circles
144. DMCA Complaints
145. Domain Diversity
146. Transactional Searches
147. Local Searches
148. Google News Box
150. Shopping Results
151. Image Results
152. Single Site Results for Brands
153. Number of Tweets
154. Authority of Twitter Users Accounts
155. Number of Facebook Likes
156. Facebook Shares
157. Authority of Facebook User Accounts
158. Pinterest Pins
159. Votes on Social Sharing Sites
160. Number of Google+1′s
161. Authority of Google+ User Accounts
162. Verified Google+ Authorship
163. Social Signal Relevancy
164. Site Level Social Signals
165. Brand Name Anchor Text
166. Branded Searches
167. Site Has Facebook Page and Likes
168. Site has Twitter Profile with Followers
169. Official LinkedIn Company Page
170. Employees Listed at LinkedIn
171. Legitimacy of Social Media Accounts
172. Brand Mentions on News Sites
173. Co-Citations
174. Number of RSS Subscribers
175. Brick and Mortar Location With Google+ Local Listing
176. Website is Tax Paying Business
177. Panda Penalty
178. Links to Bad Neighborhoods
179. Redirects
180. Pop-ups or Distracting Ads
181. Site Over-Optimization
182. Page Over-Optimization
183. Ads Above the Fold
184. Hiding Affiliate Links
185. Affiliate Sites
186. Auto-generated Content
187. Excess PageRank Sculpting
188. IP Address Flagged as Spammers
189. Meta Tag Spamming
190. Un-natural Influx of Links
191. Penguin Penalty
192. Link Profile with High % of Low Quality Links
193. Linking Domain Relevancy
194. Unnatural Links Warning
195. Links from the Same Class C IP
196. “Poison” Anchor Text
197. Manual Penalty
198. Selling Links
199. Google Sandbox
200. Google Dance
201. Disavow Tool
Source - Google's Ranking Factor
If a business can improve their campaigns on above tasks I'm sure they won't need any SEO Companies to do their seo campaigns.
Please comment, if you feel I've missed out something or which can be included.
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