I have a little suggestion that they could do with the appleVis site.
If someone replies to something you've posted or subscribed to E.g. Comments, at the bottom of the email you recieve, it says something along the lines of "this is an automated message. Please do not reply to the sender address".
Why not have it so you can reply to the email you recieve from appleVis and it will post whatever you've put in the email as a comment in your name?
I know a few mailing lists that work this way and it does make replying to comments easier.