Peer-to-peer file sharing clients share file fragments in the background based on rarity values. When a first peer offers a fragment to a second peer to be shared in the background, the second peer checks the rarity of the fragment and identifies one or more fragments from its swarm that is approximately...http://www.google.es/patents/US7814146?utm_source=gb-gplus-sharePatente US7814146 - File fragment trading based on rarity values in a segmented file sharing system
File fragment trading based on rarity values in a segmented file sharing system