7. The method of the claim 6 , wherein the extracting comprises: splitting the URL by predefined separators; and removing numerical characters.
6. A method of associating a search query to a cluster comprising: receiving a Uniform Resource Locator (URL) returned in response to a search based on a search query; extracting a first set of tokens from the URL; determining a similarity between the first set of tokens and each of a multiple set of tokens extracted from multiple other URLs returned in response to other search queries; and associating the search query with a cluster, wherein the associating is based at least in part on the similarities between the first set of tokens and each of the multiple set of tokens extracted from the other URLs.