BitTorrent (referred to as BT) is a file distribution protocol, which identified by URL and web content and seamless integration. It contrast HTTP / FTP protocol, MMS / RTSP streaming protocols such as download method has the advantage of those who download a file to download, while also continue to upload data to each other, so that the source file (can be a server can also be a source of individual source generally refers specifically to the first seed to seed or the first publisher) can increase the very limited circumstances to support the load of a large number of those who download the same time to download, so BT and other P2P transmission has "more people download, the download faster, "this argument. BT official name is "Bit-Torrent", is a multi-sharing protocol software, from California, a programmer named Bram Cohen developed.
Specifically for the BitTorrent file-sharing and high-capacity design that uses a bit like a pyramid scheme works.