[Article] Search Ranking Factors - an excellent analysis

Rand Fishkin has updated an article on what seo factors search engines value http://www.seomoz.org/articles/sear...ing-factors.php

which is being widely read (over 10,000 people)
http://www.seomoz.org/blogdetail.php?ID=424

Later this week it will be updated to reflect perspectives from regular commentators such as Danny Sullivan, Jill Whalen, Ammon Johns and Bill Slawski.

It's an excellent summary of what current thinking is from expert commentators on what matters and what doesn't in SEO.

The factors are grouped as:
* Introduction to Ranking Factors
1. In-Document Factors Affecting Ranking (26)
2. Site Factors Affecting the Value of Hosted Documents (21)
3. Factors Affecting the Value of a Link (25)
4. URL, Technical, Hosting & Server Side Factors (11)
5. Detrimental Ranking Factors (10)

Then comparatively weighted for their importance.

What stuck out for me in 3. was 'Popularity of Site in Topical Community' I really need to do more work in this area.

Anything jump out at you - or prompt you to do more work on an aspect of your seo efforts?

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Great article, thanks.