As the use of social media has become more pervasive across all segments of the population, social media platforms have become the primary way many of us get our information, not only about our family and friends but about world wide news and events. How reliable is this information? How much faith can we place in it? How can we know what to trust? In this book, readers will look at the origins of Twitter and its development as a news source, as well as its darker turn as a source of misinformation and propaganda. This essential book includes a glossary of useful terms and a list of helpful references.