SEOmoz conducted a survey of leading SEOs to determine what these SEOs thought were the most important ranking factors. Here is a high-level summary of the analyzing factors categorized into 3 category:

Positive Analyzing 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 links

• Link popularity of site in topical community

• Keyword use in body text

• Global link popularity of sites that link to the site

Negative Analyzing Ranking Factors:

• Malware Being Hosted on site

• Cloaking

• Pages on the site that sell links.

• Promoting the sale of paid links.

Other Analyzing Ranking Factors:

• Rate of acquisition of links

• User Data

• Usage Data

• Google Sandbox