Million-Dollar Kids: 6 Crazy Rich Teen Entrepreneurs

Niki Dankner
5 of 7

Juliette Brindak

Brindak launched her tween social networking site Miss O and Friends (an Inc. Coolest College Start-Up in 2011) when she was only 16. The site generated 10 million monthly visits, a 20-fold traffic increase since the site launched in 2005. Procter & Gamble, an early investor, valued the company at $15 million in 2008.