FILE - In this Wednesday, Nov. 17, 2010, file photo, Twitter co-founder and former CEO Evan Williams speaks at the Web 2.0 Summit in San Francisco. Williams, a Twitter co-founder who was CEO for two

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FILE - In this Wednesday, Nov. 17, 2010, file photo, Twitter co-founder and former CEO Evan Williams speaks at the Web 2.0 Summit in San Francisco. Williams, a Twitter co-founder who was CEO for two years until Costolo took over in 2010, owns a 12 percent stake in the company, which means he is in line for the biggest jackpot once the company goes public. (AP Photo/Paul Sakuma, File) less 

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Associated Press
Sat, Oct 5, 2013 9:23 PM EDT