Alisa forwarded me this article on plastics and some of the thoughts currently available on how safe they are to use for eating – apparently they may not be as inert as some people thoguht they were. If you are interested they offer links and resources to information about the different kinds of plastics out there, how to identify them, and where to buy safe ones.
The article links to the Canadian Cancer Society page on using microwaves with plastics as well – another good quick read.
It all sounds like something you’d expect to disprove on Snopes, but there seems to be a little meat on this bone.