"The Networked Nonprofit" by Beth Kanter and Allison Fine. The book explores how nonprofit organizations can utilize social media effectively to become more open, connected, and impactful in their efforts to drive social change. It argues that traditional nonprofit models are outdated and hinder progress in a world increasingly interconnected through digital tools and platforms. The authors propose a shift to "Networked Nonprofits," which embrace transparency, simplicity, crowdsourcing, and collaboration with diverse individuals and organizations within their ecosystems. This shift involves leveraging social media to build relationships, engage supporters, and amplify the organization's reach and impact. The book offers practical advice and examples, including case studies of organizations like the Surfrider Foundation, Planned Parenthood, and the Humane Society, to demonstrate the successful application of these principles.