Meg, I loved your reply and that of Dan, as well. But do you know what you write to be a fact? If you know of tests done of iDevices exposed to microwave radiation - even that small amount that leaks out of any microwave device - then I'd like to hear the source of your assertion, just to be sure. You can't blame me, can you?
Life is so complicated these days - what with technologies introduced into our daily lives with the minimal amount of testing to measure their impact on out health, not to mention our social norms.
I think it's a good idea to try and remember to allow for a scientific approach to "proving" things by testing and close observation whenever possible.
Though in this case, to be sure, I guess what I was looking for is any obvious warning that you should not place iDevices, whether charging or not, very close (under) microwave ovens because it has already been shown to harm them. Come to think of it, ion that was the case I'm sure we all would have heard about it already by now.
Steve