David Heinemeier Hansson on the idea that Zuckerberg is now really rich:

Now anyone with an iota of critical thinking would perhaps question whether a stock purchase of 0.01% is representative for the worth of the company at large, but not Forbes. They simply accept this fantasy 1:3000 transformation as fact and serves it up as the foundation of an article that then goes on to place Zuckerberg as the 3rd riches techie in the world.

See also this post of mine from January.