Yeah, but off of overpriced ad revenue with relatively low profit to the purchasers. It's very likely because of how popular and new Facebook is that companies are trying to figure out whether they can use it effectively. But the novelty factor won't last forever.
Facebook still does not have a business model that works.
Facebook is surviving on investment, not income.
Mark Zuckerberg is billionaire because of Microsoft's and others' investments, not because Facebook is making billions in income.