How much electricity are you using?

Here is a great gadget for tracking how much energy you are using. The wireless meter tells you, in a stark 'pence per hour' and 'CO2 per hour' how much you are using. Turn the lights on and the meter jumps. Turn the kettle on and it leaps. It is a fabulous eye-opening tool. No more cups of tea for me!
Available at Better Generation.
This sort of technology is far preferable to simply offsetting carbon output which is a system that suggests that emitting carbon is actually an acceptable thing to do, so long as you atone for it afterwards. A neat explanation of this is this website which allows you to offset romantic infidelity indiscretions...