Over the past several months, Facebook has been testing and rolling out new features for Facebook Credits - a virtual currency that collected and exchanged users' real-world money for on-site credits that could be used in many of the site's applications and social games.

Since its launch in May 2009, the system has rapidly evolved, and Facebook has now revealed their exact revenue split with game and app developers who integrate Credits. In a blog post today, product marketer Deborah Liu wrote, "Facebook will collect 30 percent of currency spent by users...
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