The document provides an overview of social media and its history. It discusses how early forms of sharing online included private email and public bulletin boards. The development of the World Wide Web in the 1990s allowed for easier creation of web pages, leading to the rise of user-generated content and social media sites in the late 1990s and 2000s that let users share text, photos, videos, and more. It describes some of the first major social media sites like blogs, MySpace, Flickr, and YouTube. The document concludes by stating that modern social media includes sites like Facebook, Twitter, and LinkedIn that allow users to connect with others and share updates.