Since Search engines like Google only gives webmasters guidelines on ranking factors, we do not know how actually Google assigns a ranking number for a web page. There are some SEO professionals are analyzing and testing to try to figure out key Search Engine Ranking Factors in order to help webmasters’ SEO efforts.
SEO experts at SEOmoz has a presentation on search engine ranking factors this year as well. The results came from the opinions of 132 SEO professionals and an analysis of the top 30 results for 10,271 different keywords. I think to learn about the analysis report and the SEO experts’ prediction will help us, webmasters on our own SEO strategies. I summarize it as the following for your reference. It needs to be emphasized that these are reports based on statistic data, not fact.
Page-Level Factors
Linking Factors (22%)
Keyword Usage (14%)
Social Metrics (7%)
Keyword-Agnostic Features(7%)
Traffic/QueryData (6%)
Domain-Level Factors
Link Authority Features(21%)
Keyword Usage (11%)
Brand Metrics(7%)
Keyword-Agnostic Features (5%)
Page-Level Link Signals
1. Authorities Type Links has the strongest impact.
2. Diversity of relevant links has a stronger impact compared with the raw number of links.
3. Partial and exact match anchor text have strong influence on rankings.
4. SEO experts believe the power of links has declined somewhat (2009:43%; 2011:22%).
On-Page Signals
1. Longer/Larger documents tend to rank better.
2. Using keywords earlier in content and links
3. H1 and H2 headline
4. Alt Attribute
5. Long Titles and URLs are bad for SEO.
Domain-Wide Link Signals
1. Authorities Type Links has the strongest impact.
2. Diversity of relevant links has a stronger impact compared with the raw number of links.
Domain-Level Ranking Factors
1. While Google still ranks content on a page level, domain ranking strength has become more important after the recent panda update.
2. Exact match domains have not performed as well as previous years.
Social Media-Based Factors
1. Facebook and Twitter popularity is strongly correlated in search engine rankings.
2. Facebook may be more influential than twitter.
Top 8 Most Negatively Correlated Metrics
1. % of Linking Domains that have followed links
2. Length of Domain Name in characters
3. Length of URL in characters
4. # of Google Adsense Slots on page
5. Total Pixel Size of Adsense slots
6. Response Time in secs
7. % of Followed links in the document
8. Number of Words in the title tag
By the report, SEOs believe that the role of the ranking factor, Exact Keyword Match Domains will decrease in the future. Quality links are going to continue to be one of the most important off page factors in search engine ranking.
SEO will likely remain the most cost effective way of getting traffic, but with more and more people spend their online time on places like Facebook, Internet Marketing is going to focus more on things like social networks and viral marketing. Internet Marketing should be considered as a whole, Search Engine Optimization is a very important part of it.
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