While Facebook made waves last year with its investment in Oculus and WhatsApp, it continues to make most of its money from just plain ol' Facebook. And, in particular, from mobile. In the last quarter of 2014, the social networking giant made $3.85 billion. Of that revenue, about $3.59 billion was from advertising, and ads from mobile accounted for a whopping 69 percent of that. That means Facebook now makes almost two thirds of its money just from mobile advertising. Facebook also posted its overall numbers for 2014, where it made $12.47 billion for the year alone. It marks the first time the company's made over $10 billion in a single year.