9. The method of claim 1 , wherein generating the search results page based at least in part on the one or more URLs or revised queries that occur in at least a specified proportion of navigation trails in the particular navigation trail group comprises: determining a set of search results that are relevant to a query that an Internet search engine received from a user; ranking search results in the set of search results based on relevance of those search results to the query; in response to determining that a particular URL is mapped to the query within rank adjustment data that were generated based on the plurality of navigation trails, including, within the set of search results, a particular search result to which the particular URL refers; generating the search results page in which the particular search result appears more highly ranked than one or more other search results from the set of search results; and sending the search results page over the Internet to the user as an initial search results page that the Internet search result engine sent to the user in response to the query.
1. A computer-implemented method comprising the steps of: generating a plurality of navigation trails based on an ordered sequence of navigational activities performed by a plurality of users; grouping the plurality of navigation trails into a plurality of navigation trail groups based on original queries with which navigation trails in the plurality of navigation trails begin; for at least a particular navigation trail group of the plurality of navigation trail groups, determining one or more uniform resource locators (URLs) or revised queries that occur in at least a specified proportion of navigation trails in the particular navigation trail group; generating a search results page based at least in part on the one or more URLs or revised queries that occur in at least a specified proportion of navigation trails in the particular navigation trail group; and storing the search results page on a computer-readable storage medium; wherein at least one navigation trail in the particular navigation trail group contains at least one URL or revised query that another navigation trail in the particular navigation trail group does not contain; and wherein the steps are performed by one or more computing devices.