I've just set up a mailing list for Perlcast. Right now, it is an announce-only list. I had some requests for email updates of when new shows come out... guess everyone is not using RSS :)
Anyway, you can subscribe to the list if you want to get email notification of new Perlcasts and new Perlcast.com contests.
Please give me some feedback if you want me to start a Perlcast discussion list. It seems that the message board has gone dead... possibly a mailing list would do better. Email or Skype me and let me know.