Facebook officially crossed 500 million users today, although that milestone has been rumored for months.
This post from ReadWriteWeb offers up a very interesting theory about a possible biproduct of Facebook Credits.
Facebook Credits: The World’s First Global Currency?
This makes a ton of sense and is frankly, more than a little frightening. Think about the implications of Facebook (or any private sector company) controlling the only truly international currency.
The mind boggles.