Chad Nelsen who is the Environmental Director at the Surfrider Foundation where he has worked since 1998. (He's currently getting his Ph.D in surf economics!) He gave a presentation about how Surfrider Foundation is striving to make its grassroots network more effective. He touched on how they are using social networks/media in this effort.
The participatory media learning materials on this site are meant to help people learn and teach the new literacies by inquiring into their significance as well as by learning their use through direct practice