Facebook revealed that 15 million users paid for virtual goods on the platform in 2011, according to a filing Wednesday with the Securities and Exchange Commission.
This is less than 2 percent of the social network’s 845 million monthly active users. Payments from virtual goods and other fees made up $557 million or about 15 percent of total revenue in 2011. The remaining $3.154 billion in revenue came from advertising.
Facebook has focused on creating platform upon which developers can build games and apps, but it still seems to be struggling to monetize it beyond advertising.