Although this is a serious subject and I agree that it is better not to use potato bags or bowl cozies in the microwave, I can't help but be reminded of an article I read a number of years ago. It was about how many microwave fires were started by people drying their underwear in the microwave. It advised everyone that putting anything made of fabric in the microwave was a potential fire-starter. Funny, it would have never occurred to me to dry my underwear in a microwave. Talk about commonsense...