Source: neither Twitter nor its board have considered replacing Costolo, despite rumors that Adam Bain may become CEO
Alexia Tsotsis / TechCrunch : Tweets: @pmarca Tweets: Marc Andreessen / @pmarca : “Dick Costolo can come to Aol, Tim Armstrong can go to Yahoo, and Marissa Mayer can go to Twitter.” Yep. http://techcrunch.com/... @alexia