Regarding mkorostoff's 1 pixel wealth page. Taking wealth from the richest is very difficult. You'll have to find a way to make them agree with it. If you forcibly take money from people then you're just an angry mob. The only thing that would appear fair is higher taxes and maybe a wealth tax [0] but a 100 billion dollars buys you a lot of lobbying power. The worst case scenario is that the rich just hide their wealth.

[0] One could even make a concession and let the wealthy choose among a list of approved charities/projects to spend the taxed money on.