Most torrent user I know use Peerguardian2 (http://phoenixlabs.org/pg2/) I thought I'd upload my list that I made. With this list and peerguardian's built in lists I have about 2.9billions Ip addresses that I'm blocking. Here's the link for the "masterlist" http://rapidshare.com/files/128569515/MasterList_2007-10-18.txt.html
Get it quick because I don't have a rapidshare account
Oh also. I had no idea where on the site I should post this, so I went with General just to be safe.