Book excerpt: New media forums have created a unique opportunity for citizens to participate in a variety of social and political contexts. As new social technologies are being utilized in a variety of ways, the public is able to interact more effectively in activities within their communities. The Handbook of Research on Citizen Engagement and Public Participation in the Era of New Media addresses opportunities and challenges in the theory and practice of public involvement in social media. Highlighting various communication modes and best practices being utilized in citizen-involvement activities, this book is a critical reference source for professionals, consultants, university teachers, practitioners, community organizers, government administrators, citizens, and activists.