For the price of Facebook ...

If we were Mark Zuckerberg, we'd have booked tomorrow off to depart with our $5bn worth of cash in a fanciful yet aloof manner. And it's just paper after all – we'd rather fondle some aluminium. Oh, that's why we still don't have a company to float...

35 years worth of daily space flights
$200,000
Thanks to Richard Branson's fairly reasonable space tourism prices, you could essentially make suborbital commutes for the rest of your working life – $5bn would get you almost 25,000 trips on Virgin Galactic. We'd say that's about 50,000 times cooler than sitting at home looking at what your mates did last night.