March 28, 2011, 11:50 AM — The nine youngest billionaires in technology run the gamut from a social networking entrepreneur to the creator of the online coupon company, groupon.com. There is one common link between them all though, their fortune started via the internet and continues to grow by the same means. Of course, these are just a few of the world's billionaires, visit Forbes.com for the complete list.
Think you know them all? Let's find out.
9. Eric Lefkofsky
Worth: 1.6 billion
Background Info: Chicago investor is cofounder and 30% owner of Groupon, which provides its many customers with exclusive deals to be found across the country. Lefkofsky met the founder of Groupon, Andrew Mason at InnerWorkings, a firm where Mason worked after college. Lefkofsky was a founder of the the firm itself.