1. A method for supplementing a web graph of linked web documents, the method comprising: identifying one or more experts for one of one or more categories; identifying one or more web documents tagged by the one or more experts for a given category; determining a corresponding category of the one or more web documents tagged by the one or more experts for the given category; assigning a proxy web document to each one of the one or more experts identified for the given category, the proxy web document representative of a corresponding one of the one or more experts; and linking one or more proxy web documents to the one or more web documents tagged by the one or more experts for the given category.