[Frooxius]

But torrent sites aren't legal.

That's not true and it's actually quite common misconception. Torrent sites are perfectly fine as is any file sharing network. It's the content that you share/download that matters and that determines the legality.

BitTorrent networks are used for downloading Linux distributions for example, or even music that authors release for free and it's all perfectly legal. Still... quite a lot people think that torrent site is illegal. So again: it's the content, not the medium.