The world of entrepreneurial business is one based on flexibility, creativity, and the willingness to work your fingers to the bone. No subset of business start-ups embodies this spirit more than those that grow out of little dorm rooms all over the country. Let's take a look at some of the dorm room start ups that rocked the business world as well as a few that are on the rise, and primed, to follow their lead. The Billion Dollar Start Ups Facebook There was a time before Facebook and it was dark, boring, and sorely lacking "likes". Facebook was concept-ed, created, and nurtured in a little Harvard dorm room by one of the most famous nerds of all time: Mark Zuckerberg. Zuckerberg's Facebook fundamentally changed the way we interact with our fellow man on a day to day basis and, despite some privacy issue controversies, has been one of the most successful start-ups of all time. The big Z is currently sitting on over $7 billion dollars. Not ...