Steam is hooking gamers up with the Call of Duty: Modern Warfare 2 Free Weekend this Weekend. Beginning this Thursday, April 8, gamers around the world can play Call of Duty: Modern Warfare 2 multi-player free of charge during a special Free Weekend promotion on Steam. Gamers who haven't experienced Modern Warfare 2 can jump in to the ultimate war experience for free. Just head to http://store.steampowered.com/news/3674/ for more information and prepare to get down Modern Warfare 2 style this weekend, for free!