Source: Gamesutra
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Steam creator Valve has announced that its distribution platform has recently reached more than 15 million users, as its holiday sales grow over 158 percent over the year prior driven by Call of Duty 4, BioShock and Orange Box.
The company said that in addition to community features
added in September of 2007 like personal profiles, friends lists, groups, instant messaging, text and voice chat, event schedulers, even more unannounced services will be added in the coming year to support forthcoming games like co-op zombie survival title Left 4 Dead.