Some of us still don't enjoy downloading 5 gigabytes just to try a game. Granted, this makes crafting the demo a little harder than putting in an unlock code.

Some of us still don't enjoy downloading 5 gigabytes just to try a game. Granted, this makes crafting the demo a little harder than putting in an unlock code. As for torrent sites - demos could easily be distributed separately from full games. Companies could even have private trackers, though they might want a custom installer for that.