Mark Zuckerberg and his wife Priscilla Chan were two of the most charitable Americans last year, second only to Warren Buffet.
It was Zuckerberg's largest donation to date. In 2010 he gave Newark, New Jersey schools $100 million to further education efforts there.
Warren Buffet donated about $3.6 billion last year. His money went towards the Howard G. Buffett Foundation, NoVo Foundation, and the Sherwood Foundation. But then, his fortune is much more sizeable than Zuckerberg's: $46 billion versus $9.6 billion.
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