You mentioned that Honda Insight Yahoo list and I found it and that's the one I've been trying to get for last 6 months. I have never received a reply to join from the moderator. I thought the list was dead but see recent posts. Too bad there's no other way for me to contact the moderator and ask why I can't join (maybe it's run by an ex-boyfriend and he's avoiding me *HA*)
http://autos.groups.yahoo.com/group/honda-insight/