One embodiment of the present invention distributes data via a network to remotely located users. Historical purchase information for a first user is stored in a database. Authorization is received over a network from the first user allowing a second user to view at least a portion of the historical...http://www.google.de/patents/US7778890?utm_source=gb-gplus-sharePatent US7778890 - Methods and systems for distributing information within a dynamically defined community
