This document provides an overview of social networking, social media, and community projects completed by Common Knowledge in conjunction with nonprofit clients between 2006-2011. It summarizes projects for the Arthritis Foundation including RA Connect and Lets Move Together communities, as well as projects for the Sierra Club including Climate Crossroads, Sierra Student Coalition, and Trails communities. It also summarizes projects for Federation for American Immigration Reform, Community Gatepath, Operation Smile, and Junior Achievement. The projects included development of online communities, custom applications, and Facebook applications to engage constituents and support causes.