Ali Rowghani has been named chief operating officer of Twitter, according to a c…

Ali Rowghani has been named chief operating officer of Twitter, according to a change in his Twitter profile, shifting into the role that CEO Dick Costolo once held only a few years ago

http://allthingsd.com/20121219/twitter-shifts-top-brass-with-new-coo-and-cfo-appointments/?mod=atdtweet