A method and apparatus for dynamically encoding transactional information into a document over a network. The transactional information may include information about client data, object properties, or network conditions. The document may contain embedded links with embedded objects that can be requested...http://www.google.com/patents/US7340521?utm_source=gb-gplus-sharePatent US7340521 - Method for routing a request over a network to a content source that can most advantageous serve the request
