QQ幣之後 Facebook幣 (Facebook正式宣佈官方虛擬貨幣系統上線)

Facebook幣: Facebook Credits

Facebook user 可以用Paypal 買Facebook Credits
Facebook user 0係Facebook Apps 買/用Facebook Credits
Facebook 收 Facebook Apps 30 percent 手續費
(同App Store 一樣)

from
http://developers.facebook.com/news.php?blog=1&story=364