Analyzing Ranking Factors
SEOmoz.com (now moz.com) periodically conducts surveys of leading search engine optimizers to determine what they think are the most important ranking factors. They are divided into mainly three.
(1)Positive Ranking Factors.
(2)Negative Ranking Factors.
(3)Other Ranking Factors.
Keyword use in title tag
Anchor text of inbound link
Global link authority of site
Age of site
Link popularity within the site’s internal link structure
Topical relevance of inbound link
Link popularity of site in topical community
Keyword use in body text
Global link popularity of sites that link to the site.
Server is often inaccessible to crawler
Content very similar to or duplicate of other web pages
External links to low-quality/spam sites
Participation in link schemes or actively selling links
Duplicate titles/meta tags on many pages
Rate of acquisition of links
Google sandbox – Work as a filter