You should start your own group at
http://groups.yahoo.com. Then
advertise it here and find other Nugget. Be sure to set the group up
as "restricted" so that you must approve all people trying to join (or
you will get spamm, junk posts, etc).
I don't like Google groups as the choices for memberships does not
allow you to do what I mention for Yahoo groups.
Good luck, John