famous investor says he never buys the ipo hype. >> the idea that something coming out on a monday that's being offered with significant comissions, the seller electing the time to sell is going to be the best single investment that i can make in the you might not make any money off the ipo, but jack dorsey will. the business of being the creator of the tweet. he is the man behind the tweet. changing the world 140 characters at a time. but there is a lot more to the business of being billionaire jack dorsey. born in st. louis, dorsey taught himself to program when he was a teenager, and like many great tech moguls, he dropped out of college and headed to san francisco to join the start-up world. dorsey teamed up with evan williams and biz stone, and twitter was born. in march 2006, dorsey wrote the first tweet.