1. A method for generating search results comprising web documents with associated expert information, the method comprising: receiving one or more search queries; determining one or more categories of web documents responsive to one or more search queries; crawling a web graph of linked web documents to identify one or more web documents tagged as within the one or more categories responsive to the one or more search queries; generating a result set of the one or more web documents identified as within the one or more categories responsive to the one or more search queries; ranking the result set of the one or more web documents identified as within the one or more categories responsive to the one or more search queries; and generating a list of ranked search results responsive to the one or more search queries.