Anything that returns money to disadvantaged Third World peoples is good per se, but we must remember that the system which enabled these people to become insanely, obscenely rich is the very one which created disadvantage and poverty. It cannot exist without it. I applaud the 'generous' philanthropy, but I won't be impressed until Buffet, Gates and the rest live in modest suburban houses, on a fair wage, and drive nice family sedans...
Cheers -