Millions of people use free P2P file sharing programs - software to swap music, video and other files over the Internet. Many free P2P file sharing programs exist. Some P2P software offers a larger user base and greater numbers of files to choose from. Some software better utilizes network resources and may be easier to use. Finally, some P2P file sharing programs are incrieasing in popularity while others are declining. Consider all of these factors when deciding which P2P network to join. at last, p2p software is most important thing.