Andy,

A lot of people had difficulty with JOINing Yahoo! Groups.  Personally I had no problem as I'm part of several Yahoo! Groups.  I think people find the process intimidating because they have to create and Yahoo! E-mail account and if you wan tthe e-mail to go to another account you have to dig into and edit your settings and than you have to have a a verification message sent and click the link and blah, blah, blah.

Now that Adobe has changed their User Group area and it includes a discussion board this might work out however, this discussion group only sends you a notification if you have checked the box below when someone has commented on a post and I think only the people on this particular discussion will be sent a notification... at least I think that's how this one works.

[NOTE: Andy, John and Andrew will be receiving a notification.  No one else in the user group will.  I wonder if there is a way for someone to e-mail everyone in the user group?]