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Peter Thiel, co-founder of PayPal Inc., speaks during a Bloomberg Studio 1.0 Interview in San Francisco, California, U.S., on Monday, Aug. 25, 2014. EBay Inc.'s PayPal service will start accepting bitcoins, opening up the worlds second-biggest Internet payment network to virtual currency transactions. Photographer: David Paul Morris/Bloomberg via Getty Images

Peter Thiel, co-founder of PayPal Inc., speaks during a Bloomberg Studio 1.0 Interview in San Francisco, California, U.S., on Monday, Aug. 25, 2014. EBay Inc.'s PayPal service will start accepting bitcoins, opening up the worlds second-biggest Internet payment network to virtual currency transactions. Photographer: David Paul Morris/Bloomberg via Getty Images