>> It's quite possible Costolo was hired as COO as a way of transitioning him into the CEO spot if he did well. I'm quite sure this is what happened. Here's a

>> It's quite possible Costolo was hired as COO as a way of transitioning him into the CEO spot if he did well. I'm quite sure this is what happened. Here's a detailed breakdown from Shervin Pishevar on how SGN did practically the same thing. http://www.quora.com/Is-it-true-that-Shervin-Pishevar-is-out-as-CEO-of-SGN http://www.quora.com/Is-it-true-that-Shervin-Pishevar-is-out...