Mobile payments service Zong raises $15 million from Matrix Partners

Zong, a mobile payments startup that helps social gamers buy virtual goods, raised $15 million from Matrix Partners. The company, which started off as a division of Echovox and rode the wave of the booming virtual-goods industry, has now spun-off as an independent enterprise. It’s also cemented a long-in-the-works deal to be the mobile payments provider for Facebook’s new virtual currency Credits.