bittorrent is great and
www.filelist.org is a great tracker it might take a while to get registered though (max 100k users constant pruning of inactives though) if were not allowed to post trackers here... my bad but trackers are legal because they don't host any files... i use bittornado (
www.bittornado.com) but azeurus or abc are better they take way more system resources though