As recent events in Japan, the Middle East, and Haiti have shown, Twitter offers a unique platform to connect individuals and influence change in ways that were unthinkable only a short time ago. In Claire Diaz Ortiz, Twitter's head of corporate social innovation and philanthropy, shares the same strategies she offers to organizations launching cause-based campaigns. Filled with dynamic examples from initiatives around the world, this groundbreaking book offers practical guidelines for harnessing individual activism via Twitter as a force for social change. With more than 200 million users worldwide, Twitter has established itself as a dynamic force, one that every business and nonprofit must understand how to use effectively.