mod_torrent is a drop in solution for Apache servers when deploying the BitTorrent file swarming technology. The module transparently makes all, or optionally only certain types of files, retrievable by any client implementing the BitTorrent protocol.
This module is still in the early phases of development, but I like the fact that you will be able to specify which files get shared on the BitTorrent network. As a shareware developer, I like the fact that maybe I will be able to transparently provide people who download my software with another option other than FTP.
BitTorrent could certainly help me save some money due to high bandwidth consumption.