Anything you want! I don't think at that level there is not much you can't do.... but whatever you do, you could sure have a lot of fun at it for that much cash.

I think i saw an affiliate program somewhere that was offering this kind of payout somewhere in another post, if you sent them 10,000,000,000 joins in the next 90 days or something like that... maybe we can try that and we can all find out what it is like to have 50,000,000 to spend!