"....OK. Now go and search for "Avatar".
Google gives me 'About 1,520,000,000 results". The first five pages (at least) contain no links to any infringing content.
How about Isohunt? '4000 items'. All of which are, as far as I can be bothered to look, links to infringing content.
.......
And that's the difference. Google indexes all sorts of stuff, Isohunt and other torrent-indexers only index torrents, and their main problem is that although they can be used to search for legal content it's a sad fact that most of their results lead to "infringing content"."