1. A computer-implemented method for ranking web pages in a result set, comprising: under control of one or more computer systems configured with executable instructions, establishing, in response to receiving a query containing one or more query terms, a plurality of rating scores, a first subset of the plurality of rating scores reflecting a first determined level of relevance of one of a plurality of web pages generated in response to the query to one of a plurality of query terms, a second subset of the plurality of rating scores reflecting a second determined level of relevance of the one of the plurality of web pages generated in response to the query to one of a plurality of terms not included in the query terms and associated with the one of the plurality of web pages; observing interaction of a plurality of users with a selected web page of the plurality of web pages during a rating period to detect any of a type of content interaction, each of the type of content interaction being performed with respect to the selected web page, the type of content interaction comprising printing the content and copying the content; in response to detecting any of the type of content interaction performed by any of the plurality of users, adjusting at least one of the established first subset of the plurality of rating scores for at least one combination of the selected web page and a query term among the one or more query terms, the rating score being adjusted by an amount based at least in part upon the detected content interaction, the adjustment to the rating score being configured to be positive based at least in part on the detected content interaction, each adjustment to the rating score corresponding to an inferred relevance of the web page to one of the query terms; and adjusting at least one of the established second subset of the plurality of rating scores for at least one combination of the selected web page and one of the plurality of terms not included in the query terms and associated with the one of the plurality of web pages, the rating score being adjusted by an amount based at least in part upon the detected content interaction, the adjustment to the rating score being configured to be positive based at least in part on the detected content interaction, each adjustment to the rating score corresponding to an inferred relevance of the selected web page to the one of the plurality of terms; and for each of a plurality of web pages included generated in response to the query: selecting established and adjusted rating scores for each combination of the web page and a query term and for each combination of the web page and a term not included in the query terms, and determining a ranking score for the web page by combining the selected rating scores.