Bioshock 2 GFWL Owners Get Free Steam Activation

That's right for those of you who already own Bioshock 2 on disk you can now use your serial number to activate the game on Steam.  With activating the game on Steam you get all of the games DLC, Steam achievements, and you'll be able to play using the Xbox 360 controller.  That's right all this for free and why did this happen cause you won't be able to buy the DLC for your GFWL copy anymore cause Microsoft removed the store in August.  I hope other companies will make the jump soon like Codemasters for Dirt 2 and Dirt 3.