Speaking of Warcraft, most of the people I knew who played, did it in Windowed mode.

All to often, you needed to reference WowHead.com and after you alt-tabbed back in, you'd come back to find your dead little corpsed ganked by the damn Horde.

Of course the screenshot on the site is of World of Warcraft. Early adopters anyone?

This is clearly more convenient, especially for the average user.

Of course, everyone should already be playing their games in a window via Wine. :-p