Oh come on use bait of common sense it's obvious people who are downloading illegally are doing it via torrents, rapidshare e.t.c. Even you no that!
WRONG!
When I bought a boxed copy of Lord of The Rings Online, I had an option of either downloading the client either through codemasters, or a torrent.
Codemasters service was absolute tripe, and I downloaded it through the torrent. This was fully allowed by Codemasters and was advised on their forums to do this if having difficulty with downloading the game.