Editor's Note: Anyone interested in creating scalable, positive social impact while conserving resources through a disciplined approach to social entrepreneurship should read The Social Entrepreneur’s Playbook. SEA Change, a social enterprise accelerator our foundation supports, uses the book's framework and "Tough Love Tests" at the end of each chapter to help participating social entrepreneurs test their ideas and validate their products.

http://www.amazon.com/Social-Entrepreneurs-Playbook-Expanded-Enterprise/dp/1613630328