Since suprnova.org is down, I am still lookig for another good bittorrent webpage. I came acros isohunt and lately torrentspy, isohunt seems to be a pure search engine, while torrentspy is a regular tracker.

I am using the official bit torrent client, I also gave the azerus client a try, but any client besides the official one is using to much of my computers performance.

For lots of more info check the wikipedia entry:
en.wikipedia.org