This afternoon I got a call from Jeff, who I'm working with to offer a Python/Zope/Plone training seminar. He was just calling to confirm that I was okay with the rescheduling of the conference call from Friday to today. It was the first I'd heard of the conference call. I didn't have Jeff's email in my address book (we'd done everything over the phone), and Mozilla was picking up his (HTML-formatted) emails as spam.
I get around 1800 spams/week, so 3 emails getting lost is still a pretty low false-positive rate (figure that I've only noticed 5 total in months of use). Still, annoying to have it show up while setting up a job. Oh well.