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"In celebration of last week's Makin Map DLC release, Call of Duty: World at War soldiers will receive double XP all weekend long. From Friday through the early morning hours of Monday, March 12, double XP will be enabled on all gaming platforms including PS3 and Xbox 360. Twice the experience points is an added incentive to get online over the weekend, though we doubt hardcore World at War gamers really need convincing. It's still a nice gesture, though, Treyarch."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2009/03/05/world-at-war-offers-up-double-xp-all-weekend-long/>