One of my favorite things in the world is writing back (to everyone) when my conservative relatives include me on a giant CC list with some conservative propaganda attached. I love 'em a whole bunch, but the stuff they send around sometimes makes my head hurt. It does make me awfully happy when they give me the chance to write back though.
If you've gotten an email with a subject something like Observations of a Law Professor, and you want to put the kibosh on it but don't have the time, you are more than welcome to follow that link to my reply. Use whatever suits you.