Adam Hildreth founded English social networking site Dubit in 1999, when he was just 14 years old. The website's popularity increased in the UK, and, by 2005, it had already made him $3.7 million.
Hildreth is now worth an estimated $38 million, according to Addicted2Success
Sean Belnick was also 14 when he created bizchair.com, an online furniture store. His initial investment was only $500, in furniture he kept in his bedroom. By 2009, Belnick was worth $42 million and had moved into a 702,000 square feet warehouse.
Scottish Fraser Doherty is the CEO of Super Jam. Frasier left school at 16 to start making jam. His company is currently a major supplier of jam for UK department stores, and he is worth $2 million.
Tyler Dikman founded Cooltronics in 2000, providing online tutorials on how to upgrade your PC. He was just 15 at the time, and his company earned him $3.7 million so far from subscriptions and ad space sales.
Juliette Brindak was only 10 years old when she started Miss O and Friends, a celebrity gossip, games and quizzes website targeted at teenage girls. A line of Miss O and friends books followed, making Juliette a millionaire. She is currently CEO of her company, and has an estimated net worth of $15 million.