1 / 10

TechCrunch Disrupt NY 2013 - Day 3

NEW YORK, NY - MAY 01: David Karp of Tumblr speaks onstage at TechCrunch Disrupt NY 2013 at The Manhattan Center on May 1, 2013 in New York City. (Photo by Brian Ach/Getty Images for TechCrunch)

10 high-school dropout millionaires

Tumblr co-founder David Karp, 26, just sold his blogging platform to Yahoo! for $1.1 billion. By doing so, he joins a surprising list of the rich, famous and diploma-less.