The Motion Pictures Association of America is to launch a legal attack on BitTorrent users who abuse the technology developed by Bram Cohen in 2001, to share illegal copies of movies. BitTorrent was developed to make a quicker way of spreading large files around a network. It breaks files up into little segments and users who are downloading the file are also uploading it to other users. This takes an enormous amount of pressure off a source server. A server known as a tracker keeps track of details among filesharers to help them get more sources for their file and keeps track of the amount of the file each user has.
Source:
The Register












