This document provides an overview of social media and its importance. It discusses how social media represents a significant shift from one-to-one and one-to-many communication to many-to-many interaction. Key aspects of social media include participation, openness, conversation and community. Examples are given of how social media is used to host conversations, share experiences, show creativity, gain support, collaborate, feel connected, engage stakeholders, and respond to events. The document notes that social media allows information to be shared more widely and barriers to participation have been reduced.