Green With Guilt

A new Facebook app to lower your energy usage:

Social pressure is more powerful … when it’s attached to communities, not to abstract averages that describes greater slices of society. And distributing information throughout communities is exactly what Facebook excels at. … Most people don’t care what their utility company thinks and won’t change their behavior to save a couple bucks each month. But we do care what our friends think, and that could make this system work.