Jack Dorsey will serve as CEO of Square and Twitter


Twitter named co-founder Jack Dorsey as its CEO on Monday, a job he'll take on in addition to running Square, the mobile payment company he also co-founded. Dorsey, 38, has served as interim Twitter CEO since July, when Dick Costolo stepped down.
Dorsey founded Square after being ousted as Twitter CEO in 2008. After some hesitation, investors in both companies reportedly now support his permanent return to Twitter.
"Deion Sanders played in both the World Series and the Super Bowl," venture capitalist Keith Rabois told The New York Times in September. "I don't see any reason why Jack can't do that."
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For what it's worth, Dorsey himself doesn't seem terribly concerned about his workload, either. Julie Kliegman
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Julie Kliegman is a freelance writer based in New York. Her work has appeared in BuzzFeed, Vox, Mental Floss, Paste, the Tampa Bay Times and PolitiFact. Her cats can do somersaults.
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