This tip has never made sense to me as why it is even a tip. "Turn off the lights or the TV when leaving the room." Oh, I know why you should do it, save electricity, save the planet, all that great stuff. I just do understand why people don't do it.
I turn off the light when I leave a room nobody is in, sometimes even the rooms that have people in them out of habit. If the TV is not being watched, why the crap should it be on? There is nothing good on anymore, and if there isn't anything on to watch, why should it be on anyways? Same thing with music.
If nobody is there listening, why have it on? If nobody is using it, why have it on?