This bug is to refactor the mailing lists into a sane hierarchy, per <http://quetzalcoatal.blogspot.com/2008/10/mailing-list-sanity.html>. Steps 1, 2, 4, and 6 will most likely be patches on this bug; steps 0 (removing some subclasses of nsAbCardProperty), 3, and 5 will be on separate bugs.
assignee=nobody, so >status=new
Mailing List behaviour is totally insane (wrong design and buggy!), so this looks like a great catch-all idea ;)
Bug 757736, Bug 628035, Bug 434014, Bug 534564, Bug 715694, to name but a few...