Wow good to know, I didn't plan on using them anyways, but I don't plan on using heat lamps either, decided to go with a premier heat plate, had many say they were not worth the expense, but I do not want to worry about a fire, or a blown heat bulb. What do you think? The way I figure it, heat bulbs cost and don't last forever, mine is still good but for how long? If those plates have a decent life I think they are worth it. If anything they might sleep at night instead of making tons of noise keeping me up, they only seem to sleep periodically and eat and make tons of noise at night with a heat lamp.
I'm going to invest in a plate in the spring - they are supposed to be low electricity and a more natural way of brooding for the chicks. They only work in temps 50 or above though so I won't get one till spring and I'll also have to still use a heat light for any late fall broods.