You're right. I have been banging on about how devices wasting energy in the home are actually neutral if you also have your heating on. Obviously if you have your aircon on then they are wasting energy as the aircon works harder.

Non-techies don't know the difference between a Megabyte and a Gigabyte so would not recognize that the latter takes a lot more energy to process. Thankfully hardware is staying at about the same performance but becoming more energy efficient. We should also see some improvements in software energy requirements as that gets speeded up. It amazes me how quickly a Vista laptop drains it's battery, so that will have to be fixed too.