PayPal founders Max Levchin and Peter Thiel estimate that their ex-PayPal colleagues run $30 billion worth of businesses. Here's a snapshot of what these guys are up to now. | ![FORTUNE Magazine](https://i.cdn.turner.com/money/.element/img/1.0/logos/mag/logo_fortune_125x21.gif) | | ![NEXT](https://i.cdn.turner.com/money/.element/img/1.0/popup_common/button_next_sm.gif) | 11 of 11 | Premal Shah Companies founded or co-founded: Kiva Investors: Reid Hoffman
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