Depends on what kind of content you're looking for. I'm into scifi ebooks and was pointed towards myanonamouse.net. I wasn't impressed. They have a lot of problems with their site, lots of broken links and maxed out server errors, their content is limited, for a "We're like Disney!" they have no problem with racism and such content, etc. I'm eagerly awaiting the return of the big D myself.
i use torrentz dot com as a search engine just to see what the best movies and games are, i dont download torrents or anything it messed up my last mac pretty big time from when i used to do it, i just use share software like emule and limewire now