The second edition of Rhetoric Online: The Politics of New Media has been extensively revised and expanded in order to systematically examine how rhetorical theory can be applied to political activity across a wide range of new media technologies. Warnick and Heineman study the web as a public sphere, touching on how websites, social media, smartphone applications, blogs, viral video, and web-based anti-institutional practices such as hacktivism impact everything from electoral politics to activism. Furthermore, they provide critical insight into how rhetoricians might consider...