One of the basic knowledge required by the owner of the website / blog before doing search engine optimization is to first know sometimes SEO variable in terms of SEO variables known by other names google google ranking factors or signal. In general, based on information from the official website of google there are more than 200 variables used by Google to assess and rank to a website / blog.
There are 4 main categories which will appear on the list below:
I. POSITIVE ON-PAGE SEO factors are factors that must be optimized in a website / page of your website
II. POSITIVE OFF-PAGE SEO factors are factors that must be optimized from outside your website
III. NEGATIVE ON-PAGE GOOGLE SEO ranking factors are negative things that should be avoided, these factors occur in the website / blog
IV. NEGATIVE OFF-PAGE SEO factors are negative things that should be avoided, these factors occur outside website / blog
I. POSITIVE ON-PAGE SEO Factors
A. KEYWORDS
1.Keyword in URL
2.Keyword in Domain name
3.Keywords - Header
4.Keyword in Title tag
5.Keyword in Description meta tag
6.Keyword in Keyword metatag
B. Keywords - Body
7.Keyword density in body text
8.Individual keyword density
9.Keyword in H1, H2 and H3
10.Keyword font size
11.Keyword proximity (for 2 + keywords)
12.Keywords - Other
13.Keyword in alt text
14.Keyword in links to site pages (anchor text)
C. NAVIGATION - INTERNAL LINKS
15.To internal pages-keywords?
16.All Internal links valid?
17.Efficient - tree-like structure
18.Intra-site linking
D. NAVIGATION - Outgoing Links
19.To external pages-keywords?
20.Outgoing link Anchor Text
21.Link stability over time
22.All External links valid?
23.Less than 100 links out total
24.Linking to Authority
E. OTHER ON-Page Factors
25.Domain Name Extension
26.Top Level Domain - TLD
27.File Size
28.Hyphens in URL
29.Freshness of Pages
30.Freshness - Amount of Content Change
31.Freshness of Links
32.Frequency of Updates
33. Page Theming
34.Keyword stemming
35.Applied Semantics
36.LSI (Latent Semantic Indexing)
37.URL length
F. OTHER ON-SITE Factors
38.Site Size - Google likes big sites
39.Site Age
40.Age of page vs. age of site
II. POSITIVE OFF-PAGE SEO Factors
A. INCOMING LINKS:
41.Page Rank
42.Total incoming links ("backlinks")
43.Incoming links from high-ranking pages
44.Acceleration of link popularity
B. FOR EACH INCOMING LINKS:
45.Page rank of the referring page
46.Anchor text of
47.inbound link to you
48.Age of link
49.Frequency of change of anchor text
50.Popularity of referring page
51. of outgoing links on referrer page
52.Position of link on referrer page
53.Keyword density on referring page
54.HTML title of referrer page
55.Link from "Expert" site?
56.Referrer page - Same theme
57.Referrer page - Different theme
58.Image map link?
59.Javascript link?
C. Directories:
60.Site listed in DMOZ Directory?
61.DMOZ category?
62.Site listed in Yahoo Directory?
63.Site listed in LookSmart Directory?
64.Site listed in Inktomi?
65.Site listed in other directories (About, BOTW, etc.)
66.Expert site? (Or Condensed Hilltop Hilltop)
67.Site Age - Old shows stability
68.Site Age - Very New Boost
69.Site Directory - Tree Structure
Map and more 70.Site site map
71.Site Size
72.Site Theming
D. Metrics PAGE - USER BEHAVIOR:
73.Page traffic
74.Page Selection Rate - CTR
75.Time spent on page
User 76.Did Bookmark page?
77.Bookmark add / removal frequency
78.How they left, where they went
E. SITE Metrics - USER BEHAVIOR:
79.Site Traffic
80.Referrer
81.Keyword
82.Time spent on domain
F. DOMAIN OWNER BEHAVIOR:
83.Domain Registration Time
84.Are associated sites legitimate?
III. NEGATIVE ON-PAGE GOOGLE SEO ranking factors
85.Text presented in graphics form only
86.No ACTUAL body text on the page
87.Affiliate site?
88.Over optimization penalty (OOP)
89.Link to a bad neighborhood
90.Redirect thru refresh metatags
91.Vile language - ethnic slur
92.Poison words
93.Excessive cross-linking
94.Stealing images / text blocks from another domain
95.Keyword stuffing threshold
96.Keyword dilution
97.Page edit - can reduce consistency
98.Frequency of Content Change
99.Freshness of Anchor Text
100.Dynamic Pages
Javascript 101.Excessive
102.Flash page - NOT
103.Use of Frames
104.Robot exclusion "no index" tag
105.Single pixel links
106.Invisible text
107.Gateway, doorway pages
108.Duplicate content (THEIR'S) below (highjack)
109.HTML code violations
110.Phrase-based ranking, filters, penalties
111.Poor spelling and grammar
IV. NEGATIVE OFF-PAGE SEO Factors
Buying 112.Traffic
113.Temporal Link Analysis
114.Change of Meanings
115.Zero links to you
116.Link-buying
117.Prior Site Ranking
118.Cloaking
119.Links from bad neighborhoods, affiliates
120.Penalties - resulting from Domain Hijacking (work with Google to fix)
121.Penalty - Google TOS violation
122.Server Reliability - S / B> 99.9%
123.No more room Pages being dropped from large sites
124. Rank Manipulation by Competitor Attack
125. Bouncing Ball Algorithm
To see more detailed breakdown of Google SEO variables above please see here google ranking factors
by http://www.komputerseo.com