Case in point: Owners of groups are getting their messages to the group bounced back with the message:
We're writing to let you know that the group that you tried to contact (eb_xxx) either doesn't exist, or you don't have permission to post to it. There are a few possible reasons why this happened:This can of course not be true for owners of groups.
* You might have spelled or formatted the group name incorrectly.
* The owner of the group removed this group, so there's nobody there to contact.
* You may need to join the group before being allowed to post.
* This group may not be open to posting.
If you have questions about this or any other group, please visit the Google Groups Help Center at http://groups.google.com/
Thanks, and we hope you'll continue to enjoy Google Groups.
The Google Groups Team
The problem has been reported many times to Google Groups Team on mailing lists, but is apparently being ignored.