] According to the patent, "a search engine modifies the
] relevance rankings for a set of documents based on the
] interconnectivity of the documents in the set. A document
] with a high interconnectivity with other documents in the
] initial set of relevant documents indicates that the
] document has 'support' in the set, and the document's new
] ranking will increase. In this manner, the search engine
] re-ranks the initial set of ranked documents to thereby
] refine the initial rankings."

Um.. More on this later.

Google lands Web search patent | CNET News.com