How to Make a Torrent - Guides - µTorrent - a (very) tiny BitTorrent client

Sharing in BitTorrent is a little more involved than with other P2P applications. This is the result of the protocol that makes this distribution system so efficient. BitTorrent shares content by breaking it up in small pieces and distributing them randomly between peers. Those peers then share these pieces with each other. This saves the seed the trouble of sending the same pieces over and over to different peers and enables all the peers in a swarm to participate to the distribution of the files regardless of their percentage of completion.