While nobody at Facebook is commenting on the rumor yet, TechCrunch is reporting that Facebook will turn the Facebook Platform into an open source project. TechCrunch's Michael Arrington reports that he has heard confirmation from multiple sources that the year-old platform will go open source, and that application developers will easily be able to migrate their Facebook applications to other social networks. If the rumor pans out, this could be good news for open source. UPDATE: Soon after this post went up, TechCrunch reported that Facebook confirmed this story as correct.