According to InsideFacebook, the social behemoth reported today that they had 845 active monthly users. The report came as a part of Facebook’s IPO filing.
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According to the post, Facebook defined an active users as “a registered user who has logged in and visited Facebook through a website or mobile device in the last 30 days.”
It appears that Facebook is well on their way towards the 1 billion users that was recently predicted for August 2012.