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"War is hell ... unless you're getting twice the experience. This weekend, Call of Duty: World at War is once again rewarding players with double experience for all multiplayer modes. Not enough for you? World at War is also introducing two brand new game types into its playlist rotation: Team Tactical and Mercenary TDM. Team Tactical is a 4v4 playlist that pits two teams up against each other in random objective scenarios, while Mercenary TDM does not allow for parties in favor of random team match-ups.  New playlists have gone live today for both Xbox 360 and PS3 players. The Double-XP event will run from today, January 30, until February 1. Happy hunting.[Thanks, Rhinosaur]"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2009/01/30/world-at-war-we-love-the-smell-of-double-xp-in-the-morning/>