Description:On this Year-End Episode of This Week in Social Media, It's time to look back at the biggest stories of 2011! Robert is joined by Sam Osborn, the show's producer, as they talk Social Media IPO's, Viral Social Unrest, to include Arab Spring and the Occupy Movement, SOPA, and the emergence of real competition to Facebook. Also, Robert delivers his predictions for the most important trends of the coming year.(47:38)