s'Ok with me, I think what I've seen on the moderator forums is that Tribes leaves the unused tribes intact so that people can look at the old threads.

I don't know what the membership of tribe.net is these days, I belong to 130 tribes but rarely see more that 4 or 5 posts per day.

I don't see any need for it to dissolve. It just needs some occasional input to get discussions going. If you don't want to moderate anymore thats another matter and you can request volunteers to fill that position. I actually know someone who would be a great mod if thats the route you want to go.

Part of the lack of conversation here is because unless there is an occasional new thread, the tribe listing falls to the back of the list of tribes so no one remembers its still here. A new post pops it up to the top of tribe lists and triggers people to pop over and see what the buzz is about.

It's just a refractory period.