Bitcoin is a decentralized Peer-to-Peer Electronic Cash System, even if it can't run on a Raspberry Pi connected to a slow internet connection.
Bitcoin can run on 56k connexion ... with 4 incoming and 4 outside connexion and mining with P2Pool.
Bitcoin is more awesome than P2P File Sharing possibilities.
http://imagizer.imageshack.us/a/img913/9600/40isWB.gif+1 This is Sovereignty.
Power to the people.
