However, despite all the reports related to the sluggish growth in its young user base, it is still an effective moneymaker. The company's IPO documents say Facebook made $3.7 billion revenue in 2011. Assuming they averaged 700 million users for the whole year, it comes out to be just over $5 per user per year. Recently, Facebook reported profits of $523 million and a 63 per cent increase in revenue for the fourth quarter, beating expectations. The revenue growth came from stronger mobile advertising sales, a priority of boss Mark Zuckerberg. Advertising revenue increased 76 per cent from the same period last year, with more than half of that coming from mobile.
