I don't get how this is going to affect illegal downloads, though. Surely the only difference is that you install it via Steam? Oh, and if you get the game via Steam, is it generally cheaper than a disked version? But will you be able to play it on multiple computers?
There are cheaper versions. Some pre-orders I've seen for £24.99. But the good thing about the Steam version is, unlike some shops I've bought games from, you won't have missing bits-like activation codes.
---------- Post added at 06:51 PM ---------- Previous post was at 06:37 PM ----------
Sounds like another reason to use steam activation so people can't buy the game second hand.
Actually the more I think about it, there was a similar activation system with Half Life. Basically once it was activated-that was it. No second hand usage