24. The non-transitory computer-readable storage medium of claim 21 , wherein said storing includes organizing the plurality of previously-submitted queries in a popularity-based query table.
21. A non-transitory computer-readable storage medium having stored thereon instructions for causing a computer to perform a method for identifying previously-submitted queries related to web page content served by a content server, the method comprising: storing a plurality of previously-submitted queries with corresponding popularity values; responsive to a link-selection request by a user for a web page of a media web site provided by the content server, receiving, by an information server of an electronic marketplace, an automatically generated request from the content server to provide information about an item to be displayed on a user device based at least in part on the web page content to be displayed on the media web site, the media content server being different than the information server of the electronic marketplace, the web page content in the generated request having been derived by the media content server; responsive to receiving the automatically generated request, identifying phrases of the content served by the content server that match at least one of the previously-submitted queries; selecting, based at least in part on a length of the identified phrases and the popularity values of corresponding queries, at least one of the identified phrases; and providing said selected at least one of the identified phrases as representative of the web page content served by the content server.