tedster - 10:34 pm on Oct 27, 2010 (gmt 0)

Along these lines, a week ago Bill Slawski posted an article about a Google patent Improved Web Page Classification from Google for Rankings and Personalized Search [seobythesea.com]. The patent talks about Query Profiles and Document Profiles, along with User Profiles.

The kind of testing that Shaddows is thinking about could be a method for statistically testing whether the match between those profiles is accurate.