Thirteen months ago Facebook's Mark Zuckerberg, the richest twentysomething in history, reached out to Snap-chat's Evan Spiegel, who oversees a revenue-less app that makes photos disappear, with an invitation, delivered to his personal e-mail account: Come to Menlo Park and let's get to know each other. Spiegel, now 23 and the brashest tech wunderkind since, well, Zuckerberg, complete with his own legal battle against a college buddy who helped him start his company, responded to his role model thusly: I'm happy to meet you... if you come to me.
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