2. The method of claim 1 , wherein providing a location factor for a first phrase includes: receiving a plurality of search queries, each search query having a plurality of search phrases, at least some of the queries including the first phrase; providing search results in response to each of the plurality of search queries; receiving responses to the provided search results; and determining a location factor for the first phrase based on responses to the search results.
2. The method of claim 1 , wherein providing a location factor for a first phrase includes: receiving a plurality of search queries, each search query having a plurality of search phrases, at least some of the queries including the first phrase; providing search results in response to each of the plurality of search queries; receiving responses to the provided search results; and determining a location factor for the first phrase based on responses to the search results. 4. The method of claim 2 , wherein determining a location factor for the first phrase based on the responses to the search results includes: determining how often responses to a search result associated with a known location are received relative to how often responses to a search result not associated with a known location are received.