Are you serious? 500 billion market cap? MrLong just throws that number out. We all like where he sees this thing going but the pps prediction is serious hyperbole at this point. Don't assume that his excellent research actually substitutes as a serious pps valuation. The pps will go up, so be happy. Nothing he has presented is a specific valuation of $500 bill. That's not a bad thing, just don't get it twisted.