7. Jeffrey Skoll (Marcos Townsend/AFP/Getty Images)

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Rank: 347
Net worth: $3.2 billion

EBay's first employee and first president, Skoll helped take EBay from startup to corporate giant, then left the company. Now funnels his money, energy into making films for social change through Participant Media and supporting social entrepreneurs through his philanthropic Skoll Foundation.

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