[kunaalarya]

Well there's interesting ways to do that with Facebook though. A la you can't start selling large amounts of goods unless you have x number of likes on your page. Same thing, on the user side. You can only buy $10 worth of credits if you have a new account, accounts can be flagged, etc. I agree it's a pain in the ass to do, and much easier said than done. But it's definitely doable and hugely profitable. They can easily take more than $1 in merchant fees, and credit card companies will beg them for their business and give them great rates. Shoot, they can do a Visa or Mastercard exclusive and get even better rates at the beginning.