Meet David Choe. The world’s richest graffiti artist. How’d he get so loaded? Well back in 2005 Facebook hired him to do some artwork in their offices. They offered him a choice: a few grand or the equivalent in stock. The graffiti gods must have been looking over him that day because he chose the stock. Now it’s worth about $200 million in cold hard cash. That’s gonna buy a lot of spray paint.