When Susan Tynan joined LivingSocial in 2011, she was struck by its CEO, Tim O’Shaughnessy. She had known him a little bit back when they worked at another startup; O’Shaughnessy, though quite young then, was rapidly rising through the ranks. But now, as O’Shaughnessy addressed hundreds of employees at the first all-staff meeting Tynan attended at LivingSocial, she was struck by what a forceful and charismatic leader he had become. He communicated the company’s progress and mission with great clarity and precision. The whole staff listened, admiring and rapt.