[citation][nom]RazberyBandit[/nom]I won't I'll use it at all. There's no incentive to physically go to their store to make the exact same purchase I can with a few clicks without leaving my home.[/citation]
Actually, it means you can buy a download only game with cash, for those who either don't have a credit card or are unwilling to use on online.
Also, if Gamestop didn't do this they would eventually have to close stores and let staff go as the market inevitable moves to digital distribution.