Meet the 30 Under 30 Coolest Entrepreneurs

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Adam D'Angelo and Charlie Cheever, Quora

Adam D'Angelo says the road to Q & A website Quora's success has been relatively smooth even though the company didn't start with a traditional business plan. Instead D'Angelo says they relied on trial and error. Last year, the start-up received $11 million in first round funding from Benchmark Capital's Matt Cohler, and the site has reportedly upwards of 500,000 users. Quora's mission is to sustain the high quality of the content for which the site is known. Read more.