This document defines social media as computer-mediated tools that allow people to create, share, and exchange information virtually. It provides examples of popular social media platforms and discusses common reasons for using social media, such as staying connected with friends, finding entertainment, and meeting new people. The document also outlines several types of social media, including personal networks, online reviews, social publishing, bookmarking sites, media sharing networks, e-commerce platforms, and interest-based networks. Finally, it discusses both the positive and negative impacts of social media, highlighting how it can help users socialize but also presents risks like reduced productivity, privacy issues, cyberbullying, and fostering superficial relationships.