He made his fortune — about $18 billion worth — "fundamentally altering the course of human existence." His patron saints are Microsoft cofounder Paul Allen and Apple cofounder Steve Jobs. And like his fellow geek, "the Nerdling," he's featured in Christopher Tennant's Official Filthy Rich Handbook, deliverable in June. An excerpt, below.

His patron saints are Facebook founder Mark Zuckerberg and YouTube cofounder Chad Hurley. He wears Robert Marc spectacles his publicist picked out for him, and last summer, when he rented a Villa next to Jade Jagger's, Nicole Richie called him a "dork loser." He's the "Nerdling" from The Official Filthy Rich Handbook by Christopher Tennant, due out in June. An excerpt, below.