11/12/2010 01:22 pm ET Updated May 25, 2011

Twitter Inventor Jack Dorsey Is Working At Twitter Again (REPORT)

Twitter inventor Jack Dorsey is back working at the company on a once-a-week-or-so basis, three industry sources tell us.

Dorsey was Twitter CEO until the company's chairman and top investor, Ev Williams, pushed him out and took the top job for himself in Fall 2008.

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