1. A method comprising: for a particular search term and a particular search result, for each one of a plurality of users, tracking both (i) a first number of times the one of the each of a plurality of users selects other search results, which are presented within a same search request session for the particular search term, before selecting the particular search result for the same search request session and (ii) a second number of times the one of the plurality of users selects other search results, which are presented within the same search request session for the particular search term, after selecting the particular search result for the same search request session; and for the particular search term and the particular search result, quantifying and storing by a processor a metric for a number of times each of the plurality of users selects other search results, which are presented within a same search request session for the particular search term, before or after selecting the particular search result for the same search request session, wherein quantifying comprises both (i) quantifying a first average of the first number of times each of the plurality of users selects other search results, which are presented within a same search request session for the particular search term, before selecting the particular search result for the same search request session and (ii) quantifying a second average of the second number of times each of the plurality of users selects other search results, which are presented within a same search request session for the particular search term, after selecting the particular search result for the same search request session.