Not really too many rules.

Be nice to each other, or I may delete your comments or ban you from the group. Try to keep things generally on topic.

I'd prefer individual threads about each orphaned group, in which we can keep track of what's been done about it, and who is interested in taking over the group. That way, any that are taken care of can have a note left in them indicating such, and can be locked.

Also, general discussion for how to approach these situations is welcome, especially if you actually are friends with any of the site admins or are a site admin.

Also, anyone who is an active admin of a group, please make at least two other people in your group admins to avoid these situations. I'd really appreciate it.