What we can learn about human nature from the informative, manipulative, confusing, and amusing messages at the bottom of the web. Online comment can be informative or misleading, entertaining or maddening. Haters and manipulators often seem to monopolize the conversation. Some comments are off-topic, or even topic-less. In this book, Joseph Reagle urges us to read the comments. Conversations "on the bottom half of the Internet," he...