1. A computer-implemented method comprising: obtaining a measure of relevance for a document referenced by a search result wherein the search result was provided in response to a search query, the measure of relevance being based on a first number in relation to a second number, the first number corresponding to a subset of a count of views of the document following selections of the search result when the search result was provided in response to the search query, and the second number corresponding to the count of views of the document following selections of the search result; and providing the measure of relevance to a ranking engine for ranking of search results, for the document referenced by the search result.