The document discusses the rapid growth of social media and digital content sharing online. It notes that the number of social media users has grown from 1.4 billion in 2012 to an estimated 2.13 billion in 2016, with Facebook being the dominant platform. The impact on society has been significant, enabling real-time communication within and across communities. However, many challenges remain regarding the business models of platforms, legal issues around content sharing, and developing social norms around online behavior. The document examines these topics to understand the current state and future trajectories of social media.