Facebook Transitions 'Credits' to Currency

Facebook announced on their developers blog that they plan to add support for subscription billing and local currency pricing.

Since we introduced Credits in 2009, most games on Facebook have implemented their own virtual currencies, reducing the need for a platform-wide virtual currency. As a result, we are updating our payments product to support pricing in local currency (ex: US dollar, British pound and Japanese yen) instead of Credits.

Subscription billing will use the traditional 30-70 rev share split.