A few weeks ago I comment to the list owner that perhaps the list
should be moderated so that spam is not posted and offered to assist.
Mary wrote back saying that she is quite busy with work recently and
offered me ownership of this group. I accepted. (Is this "All right,
wise guy, see if you can do better?")

I have deleted some spam and some spammers, set the group so that new
members require approval, and new members are moderated. I will
demoderate new members when they post a message.