John,
I checked the FAQs and there isn't any mention of being able to PM more than one user at a time. Is it possible? I've tried it in the past and was not able to, am I missing the boat or something?

You could PM one person then copy and paste the same message into other PM's. that's how i would do it.

I think I tried last year and it didn't work - that might change when the new version is out in a couple months...