Twitter Founder, Square CEO Jack Dorsey: The InterviewOnce you've helped start one of the world's most popular social networks and made billions of dollars, what's next? For Twitter founder Jack Dorsey -- now, the CEO of Square -- it's about helping small businesses take off.
Philadelphia Coffee Shop Owner Using Twitter Founder's New Business Venture To Help His Own GrowJack Dorsey, the co-founder of Twitter, is now on a mission with a new enterprise -- to level the financial playing field for small businesses.
Twitter Celebrates Its 7th BirthdayTwitter creator Jack Dorsey, @jack, sent the first ever tweet seven years ago today. "just setting up my twttr" and more than half a billion people have signed up since.

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