Algorithm

• Search engines can utilize GMAT score honing technique to tweak relevant results.
• Keyword density (SEO tip from Simon Metz)

United States Patent Applications

• Flickr Interestingness algorithm: 2006-10-26 (Interestingness ranking of media objects)
• Google PageRank: 2001-09-04 (Method for node ranking in a linked database)
• Google Page Rank: 2005-03-31 ( Information retrieval based on historical data ): A system identifies a document and obtains one or more types of history data associated with the document. The system may generate a score for the document based, at least in part, on the one or more types of history data.