That's what I've been readin', jqsquared. They are busy little "things," that's for sure. I've ID'd about 5 of them now. I hear they multiply well, too.
I also hear that cleaner shrimp will eat them, but blood red's are usually good with them. I don't have any hermits (just a few emeralds), so that may be why I'm actually seeing these things now. I never noticed them before, in other tanks; but that could've been because I had some inverts/fish that would eat them. Their shells are pretty much useless.