1. A method of providing information relevant to a query, comprising: processing syndication data feeds providing at least some of the contents of publisher web pages, including, for each syndication data feed, determining at least one content tag to associate with that syndication data feed based on a plurality of syndication data feeds which refer to that syndication data feed, the at least one content tag representing subject matter carried by that syndication data feed and being determined based on weights associated with the plurality of syndication data feeds, the determining performed automatically by running a content analyzer on the syndication data feed, and wherein the weights associated with at least some of the plurality of syndication data feeds are based at least in part on an amount of indirection to that syndication data feed or an authority associated with the at least some of the plurality of syndication data feeds; and indexing the at least one content tag in association with a syndication data feed indicator in a tag storage location, the syndication data feed indicator indicating a location of content associated with the syndication data feed; locating syndication data feed indicators responsive to the query using the indexed content tags in the storage location.