I have one on my desk Mike.
I bought it not to save power though it has done that.
I took pleasure in showing the kids how much money we were using in electricity, then asked them to switch of all the lights and appliances that were not in use. They were impressed when they saw how much money was being wasted.
I told them that is why they didnt get more pocket money.

I like unit for the temperature and humidity display more than anything else though.