Dick Costolo

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Twitter CEO Evan Williams Steps Down, COO Promoted

Dick Costolo will head day-to-day operations

(Newser) - Twitter co-founder and CEO Evan Williams is relinquishing leadership of the microblogging site to COO Dick Costolo, reports the Wall Street Journal . "Building things is my passion," Williams offers as explanation for the move, adding that he asked Colstolo to take over. Adds Costolo, recently "it became... More »

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