Every little helps; reduce your PC power consumption with LocalCooling.com

In the battle for energy efficiency every little thing you can do will help; today I cam across a tiny little application that gives you a massive amount of control over your PC and how much power it uses; best of all it estimates how much CO2 you've saved and allows you to aggregate your statistics with everyone else who uses the program.
Go check it out at www.localcooling.com