I used to visit Mininova and IsoHunt almost exclusively, but they both folded. So now it boils down to a handful of old standbys: http://www.kickasstorrents.com/ - For the more "mature" (whatever that is supposed to mean) material. http://www.demonoid.com/ - Demonoid has been a constant for as long as I have been into P2P. http://thepiratebay.org/ - I visit and contribute to this site out of principle. http://www.torrentomega.com/Rare - This site does a good blanket search, by checking Pirate Bay, BTJunkie, SumoTorrent, Torrent Portal, bittorrent.am, TorrentReactor.net, and Mininova per each query. Avoids the hassle of going to each site individually. Another fantastic site I used to frequent was http://www.textbooktorrents.com/ which more than satisfied all of my reading needs, but they also lost their soul.