BitTorrent - you have a great product, many customers, and are delivering your product to hordes of happy customers online. BitTorrent is a P2P file sharing client.
Serving large files creates problems of scaling, flash crowds, and reliability.
The key to cheap file distribution is to tap the unutilized upload capacity of your customers.
Their contribution grows at the same rate as their demand, creating limitless scalability for a fixed cost.


Download:
http://download.bittorrent.com/dl/BitTorrent-5.0.0.exe


Source: 9down