- Introduction to Google Search Quality

Read first! Source: Google Blogspot
http://googleblog.blogspot.com/2008/05/introduction-to-google-search-quality.html
- Google Search Engine from Bruce Clay
PageRank: objective measure of webpage importance ``by solving equation of more than 500 million variables & 2 billion terms``
http://www.bruceclay.com/cgi-bin/seinfo400.cgi?se=google
- Google's New Search Engine Rankings Place Heavy Emphasis on Branding
"Brands are how you sort out the cesspool."
http://www.seobook.com/google-branding
- Google's search challenge: Making computers think like humans
Google's search quality process: ``There are more than 100 signals the [Google] uses to determine the order of search results.``
http://news.cnet.com/8301-10784_3-9972034-7.html
- How does Google collect and rank results?
``a quick primer on how we crawl and index the web and then rank search results.``
http://www.google.com/librariancenter/articles/0512_01.html
- How does Google determine which web sites are the most trusted?
PageRank algorithm, content of pages, placement of words on a page, content of neighboring pages,
http://www.google.com/newsletter/librarian/librarian_2006_01/article3.html
- How Google Measures Search Quality
``Google does not use real usage data to tune their search ranking algorithm.``
http://anand.typepad.com/datawocky/2008/06/how-google-measures-search-quality.html
- Scaling Google for Every User
``In addition, [we] have 10,000 human evaluators who are always manually checking the relevance of various results.`` (7th Q&A)
http://www.25hoursaday.com/weblog/2007/06/26/GoogleScalabilityConferenceTripReportScalingGoogleForEveryUser.aspx
- Subdomains and Subdirectories
Describes the two-URL limit per each set of 10 results that applies to domains
http://www.mattcutts.com/blog/subdomains-and-subdirectories/
- Udi Manber about Google Search Quality
Analysis of queries highlight weaknesses; then we go and change the general algorithm
http://www.stonetemple.com/articles/interview-udi-manber.shtml
- Google universal ranking factors: an overview of resources
Organic, News, Blogs, etc ....
http://www.stateofsearch.com/google-universal-ranking-factors-an-overview-of-resources/
- Schmidt: Listing Google’s 200 Ranking Factors Would Reveal Business Secrets
How Google ranking algorithm works
http://searchengineland.com/schmidt-listing-googles-200-ranking-factors-would-reveal-business-secrets-51065
- Facebook + Twitter's Influence on Google's Search Rankings

Conclusion: Social Metrics are Well Correlated with Higher Rankings
http://www.seomoz.org/blog/facebook-twitters-influence-google-search-rankings
- What Social Signals Do Google & Bing Really Count?

"Your stature on Twitter could help influence how a page ranks in web search."
http://searchengineland.com/what-social-signals-do-google-bing-really-count-55389
- Just What User Behavior Data Does Google Use to Influence Search Rankings?
Note use of "may consider" and "might consider; " Google tested > 6000 changes to algorithm in 2010, 500 became permanent
http://www.seobythesea.com/?p=5325