Quora | Adam D'Angelo & Charlie Cheever

Founders: Adam D'Angelo, 26; Charlie Cheever, 29

Company: Quora

Year founded: 2009

Location: Palo Alto, California

2010 Revenue: Undisclosed

2011 Projected Revenue: Undisclosed

Employees: 22

Website: Quora.com

Facebook: Facebook.com/Quora

Twitter: @Quora

While working at Facebook in 2009, Adam D'Angelo and Charlie Cheever had a question: Why isn't there a place on the internet where a question can be answered by someone who actually knows the answer?

That question led the pair to start Quora, a Q&A website that allows users to share knowledge. You can pose a question, answer a question, and edit others' answers. The concept wasn't exactly new, but D'Angelo and Cheever knew exactly what would make Quora unique: quality.
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