Book excerpt: This book is a study of the evolving relationships between literature, cyberspace, and young adults in the twenty-first century. Megan L. Musgrave explores the ways that young adult fiction is becoming a platform for a public conversation about the great benefits and terrible risks of our increasing dependence upon technology in public and private life. Drawing from theories of digital citizenship and posthuman theory, Digital Citizenship in Twenty-First Century Young Adult Literature considers how the imaginary forms of activism depicted in literature can prompt young people to shape their identities and choices as citizens in a digital culture