Well, just look at Bill Gates' net worth, or even cash on hand. And don't forget the legions of MS management!
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I don't know what, if anything, he has contributed to this effort, but I do know that he and his wife donated a billion dollars for children's immunizations. I wouldn't be surprised if he donated a large chunk here as well. I have heard that he and his wife plan to spend most of their money on humanitarian causes, and not leave much behind when they die.
Heard a story the other day -- before these tragedies -- that Bill Gates is the most generous in the world.
If and when Bill Gates donates I don't think we will hear of it.
Now the clintons are another matter!