How Can Social Technologies Help the Environment?

Working on some post for Microsoft Hohm and flying to San Francisco for the web 2.0 conference, I’ve been plagued with the thought this morning on how social technologies can better support the green movement. This thought process came about when I’ was posting an article from Planet Green about the Gulf of Mexico Oil Spill and how your can individuals can help with this 30 mile oil slick. All of the ways to help are kind of clunky and old school, just what social technologies help to better interface with these problems.
So a few questions -
In what ways do you see social technologies and marketing fostering interaction and help with environmental issues?
What social technologies are currently available to help take action on environmental issues?



