With billions of users worldwide, Facebook has become the most successful social media website on the internet. It has also been the subject of praise, criticism, and controversy. Using key facts, sidebars, and photographs related to the topic, this book informs students about what the world was like before Facebook, including a look at previous forms of online communication, and examines what made Facebook successful and what led to its displacement of MySpace at the top of social media. This book explores how Facebook has changed the world and societies since its creation, for better and worse, and explains Mark Zuckerberg's role as leader of this successful business. Facebook's hand in contemporary social issues, such as domestic violence and bullying, is also discussed, as well as the site's connection to controversial events like Russia's interference in the 2016 presidential election, illuminating the extent of Facebook's reach and influence today.