P2P File Sharing

File sharing is you putting a document up and letting other people use it.
Is like sharing something to your friends but online is to everyone. 
P2P file sharing is peer to peer which is the supplier and consumer with no need
for a centralized coordination by servers. Some examples of P2P file sharing are BitTorrent, Kazaa, Shareaza, Ares, and Limewire but there are more out there.