The man worth at least a few billion tweets is about to take the stage here at D11, and we'll be covering Dick Costolo's every utterance as he's interviewed in one of these famed red chairs. The sit-down comes just hours after Facebook's own Sheryl Sandberg took the stage, and we're expecting quite the wide range of questions. Twitter has evolved into a global communications platform, not just for individuals looking to rise up against an oppressive regime, but for brands looking to better address their audiences. How to balance all of that? Join us after the break as we find out in real time.