Titles on social media and libraries are abundant, but most focus on marketing and outreach. Young and Rossman take a slightly different approach-using social media to foster conversations and build communities. In three distinct sections (developing communities of users, creating communities of professionals, and transforming communities into action for social justice), the editors highlight voices from a range of library types-public, four- and two-year college, health sciences, and school libraries, as well as archives. While each chapter presents valuable information, this book makes its mark with its final section. Here, Jarrett M. Drake examines how Princeton University documented its students' #OccupyNassau movement, and April M. Hathcock discusses relying on Twitter to spark discussions of critical librarianship.... Verdict: This selection will be helpful to librarians and staff considering delving into social media, as well as those looking to harness it in new ways. * Library Journal * Advancing the development of community is a core mission for libraries of all types. Communities of practice support growth and development for library workers. Social media promises assistance in both. Social media can, however, also be confusing, both in technicalities but also with understanding how people will react to different approaches. Using Social Media to Build Library Communities provides pragmatic and sensible strategies for libraries to realize the potential of social media to extend and transform community engagement. -- Lisa Janicke Hinchliffe, professor, University of Illinois at Urbana-Champaign The eight case studies featured here provide a refreshingly honest look at the challenges of building an online community. Tips are given on how to approach audience research and engagement, but the true jewel is how internal workflows were established to support the time-intensive need of feeding the social media beast. -- Amanda L. Goodman, publicity manager, Darien Library, Darien, Connecticut Just like the best social media, this book offers a blend of personal insight with professional expertise. The contributors are all practitioners and offer best practices for all types of platforms and libraries. This will be essential reading for any librarian, even those who are already social media experts. -- Margaret Heller, digital services librarian, Loyola University Chicago