Right, that is really the other side of what I didn't say. I don't expect Steam to be holding onto bitcoin for very long but if even for the short amount of time they're holding it the price is fluctuating and doesn't offer an equivalent price in USD from the time the user presses pay to the time the transaction is processed, on top of what can amount to a 20% fee it's simply not currency. They'd be better off allowing people to pay them in stocks sold on the NYSE and NASDAQ.