A system for indexing a document including: receiving a document to be processed for inclusion in an index of documents; locating a set of documents that include hyperlinks to the document; retrieving anchortext associated with each hyperlink; parsing the anchortext into one or more tokens. Then for each token the following acts are performed: determining a weight for the token, determining whether the weight assigned to the token exceeds a threshold token weight; and indexing the document under the token, if the token weight assigned to the token exceeds the threshold token weight.