9. The media of claim 8 , further comprising assigning link weights for both incoming and outgoing links for each document.
8. One or more computer-storage media with computer-executable instructions embodied thereon for executing a method for weighting links between documents in a linked network of documents, the method comprising: determining a domain of the selected document; identifying each link from the selected document to any linked destination document and determining a destination domain of each linked destination document; identifying each link to the selected document from any linked origination document and determining an origination domain of each linked origination document; identifying each document in the network known to belong to the selected category, identifying each document known to be outside of the selected category, and identifying documents having an unknown category; weighting each identified link based on whether the destination domain and the origination domain are the same as the domain of the selected document, thereby arriving at a document relevance determination to a selected category for a selected document contained within the linked network of documents; assigning a category rank to each document based on the category identification, wherein each document known to belong to the selected category receives a weight of 1, each document having an unknown category receives a weight of 1 divided by the total number of documents having an unknown category and documents known to be outside the selected category, and each document known to be outside of the selected category receives a weight of 0; and determining document relevance to the selected category based on the assigned category rank and the assigned link weights.