1. A computer implemented method comprising: a computer server receiving a search query from a user; the computer server identifying one or more result pages that pertain to the search query; the computer server determining, for each of the one or more result pages, a raw page ranking; the computer server determining a metric of direct evidence of user interest for at least one result page of the one or more result pages which is a result of a mathematical function which expresses how many users historically have visited the at least one result page subtracted from how many users have recently visited the at least one result page all divided by how many users historically have visited the at least one result page; the computer server adjusting the raw page ranking of the at least one result page among the one or more result pages based on the metric of direct evidence of user interest for the at least one result page to produce an adjusted page ranking for the at least one result page; and the computer server presenting, as search results, the at least one result page to the user in accordance with the adjusted page ranking; wherein: determining the metric of direct evidence of user interest for the at least one result page further comprises determining a measure of how often users traverse to or from the at least one result page while browsing.
7. The method of claim 1 , wherein the raw page ranking of the at least one result page is adjusted in real time in response to the search query.