The most important ranking factor for the big money keywords is Site Architecture of the Domain.
Read more about our Zen like SEO Plan at www.ZenAndTheArtOfSEO.com
Google search ranking factors can be divided into two categories.
Page Rank factors are not specific to any keyword and measure general page quality and popularity.
Page Reputation factors measure the quantity and quality of information related to a specific keyword.
Page Rank - Domain (Site Wide) Factors
Site Architecture of the Domain (whether intelligent, useful hierarchies are employed)
Length of Domain Registration
Server Uptime
Verified Address and Phone Number
Alexa Traffic Rank
Page Rank - On page general ranking factors
Quantity and Uniqueness of Content
Recency of content
Rotation of content
Short URL
Short Title Tag
Links to other pages in the same domain
Links to other domains
Page load time
Static URL
Ratio of Code to Text
Description Tag
W3C Validation
Page Rank - Incoming link general ranking factors
Trust Rank sites: Yahoo Dir., DMOZ.org, Wikipedia, ipl.org?,
Total Page Rank of links from qualified human edited content
Quality of links from qualified human edited content
Total Page Rank of links from Social Networks and Bookmarking
Quality of links from Social Networks and Bookmarking
Total Page Rank of links from unique Class C IP addresses
Quality of links from unique Class C IP addresses
Total Page Rank of links from Restricted Access TLD Extensions (i.e. .edu and .gov) with unique Class C IP addresses
Quality of links from Restricted Access TLD Extensions (i.e. .edu and .gov) with unique Class C IP addresses
Total Page Rank of links from unique IP addresses
Quality of links from unique IP addresses
Total Page Rank of links from with the domain
Quality of links from within the domain
Total Page Rank of links from all indexed domains
Quality of links from all indexed domains
Total Page Rank of links from all indexed pages
Quality of links from all indexed pages
Mentions of the page URL with out linking.
Quality Factors
Link Visibly - Location. Font size, color, etc. Image link.
Ratio of links to total number of links on the page
Links in content areas
http://www.seomoz.org/article/search-ranking-factors#ranking-factors
Google Webmaster Guidelines
http://www.google.com/support/webmasters/bin/answer.py?answer=35769
