Interesting little piece on wealth distribution:

Specifically, the number of people with some value of wealth w is proportional to 1/wE. Pareto claimed that E is generally has a value of between 2 and 3. The bigger this value, the greater the extent to which extreme wealth is suppressed - and the more socialist the economy.

Burda's group define liberal economies as those in which E is less than 2, and social economies as those in which E is greater than 2.

Wealth spawns corruption