Brilliant work indeed, and also the giving pledge,
this might be a stupid question, surely if all the billionaires work together on a few big issues, the impact would surely be even greater, right?? why let each decide in their leisure and most likely without urgency!?
IMHO seems like this is opportunity lost, as turning up for events and charity fund raising is much easier.. lets do a "solution pledge' for the second phase!?? we really need solution for Food, water, MRSA & world financial market..etc.
We have a challenge of lack of "intelligent giving" at present sadly.. see @Quora question Charities: How best to do "intelligent giving"? http://bit.ly/16hmbaJ
What do you think? we need a challenge between the Billionaires!?