Facebook's Virtual Currency Conundrum

E-CONSULTANCY.COM — Social networking giant Facebook is reportedly going to pull in approximately half a billion dollars this year in advertising revenue. It's a significant amount, but hundreds of millions of dollars more are being made on Facebook through virtual currency transactions that Facebook has no part of. Facebook, of course, has its own official virtual currency, Credits, but most Facebook app developers can't integrate them with their apps, and are not required to use them...