There is a UUMAC
group on
Facebook, a free social-networking service used by some UUMACers. The
Facebook website describes the service as "a social utility that connects people with friends and others who
work, study and live around them. People use Facebook to keep up with
friends, upload an unlimited number of photos, share links and videos, and learn
more about the people they meet."
UUMAC Facebook group communications are unmoderated. If you would like to
learn more about Facebook, there is a good overview of the service posted
here.