Which crypto-currency has the most even distribution of wealth? Bitcoin, Ripple, PPCoin, Freicoin and most other cryptocurrencies have a significant portion of the currency in the hands of early adopters or a central group charged with 'distributing' the currency. Does anyone know which has been the most successful at distributing the coins evenly? 

Thanks
It's possible to track how many coins are owned by a given address, but there's no way (at least, no easy way) to associate an address with its actual owner; it's not possible to know for sure how wealth is distributed.