* Don't allow the list to appear in the Yahoo directory
* Even though its invite-only, make it so the owner has to approve every
application for membership
* If its going to be a very active group with lots of posts, don't make it
moderated unless you have *lots* of moderators. With yahoogroups, you can
tell it who to moderate and who not to moderate. A very handy tool for
'troublemakers' that can't resist flaming, but can also have interesting
things to say at other times
* If its your list, never ever give anyone else the power to remove your
ownership status or delete the list.
* Make sure you set the all the options to "member's only"
* Think carefully if you want to allow attachments or not
* Think carefully if you want people's e-mails revealed to all, or kept
secret
* Think carefully about who has access to what

There are probably better ways to manage a mailing list than Yahoo. I think
the @majordomo software was pretty good - for e-mail only.

The advantage with Yahoo (and other similar services if there are any) is
the other features, such as the calendar, the database, the pictures area
and the easy way in which to manage the membership settings. Still, the
disadvantage with Yahoo is the spam, that people have to be a member of
Yahoo to take advantage of the extra features, and that its web-based
administration not e-mail based.

HTH

Yowie