I'm experimenting with admin settings on the sharebro group. Specifically:
"Users decide where their replies are sent" -- I think this means that "Reply" sends to the author, but "Reply To All" sends to the list and to the author.
"[sharebro]" is now prepended to message subjects. Please let me know if it irritates you.
There's a concise footer.
New members are (still) unmoderated.