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Dick Costolo

Dick Costolo CNBC Next 25
Benjamin Wachenje

Title: CEO, Twitter

Born: September 10, 1963, Royal Oak, Michigan

Education: BS in computer science and communications, University of Michigan

Early Marker: Started and sold three Internet companies in the 1990s; the last one, Feedburner, was sold to Google for $100 million

Big Idea: Adding services and mobile apps to generate new revenue streams that can bolster core advertising business.

Wave of the Future: Social media

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CNBC25: Rebels, Icons and Leaders