1. A computer-implemented method, comprising: identifying, at a server, a plurality of documents responsive to a search query; accessing, at the server, usage information associated with the plurality of documents, the usage information including, for each document: a frequency of visit value based on a number of times the document was visited during a time period; and a unique visit value based on a number of unique visitors to the document; determining, at the server, for each document, a usage score from the frequency of visit value and the unique visit value associated with the document; and determining, at the server, an organization for the documents based on the usage scores for the documents.