Longer ones generally have the most barney between just a few individuals, which are usually repetitive as well as navel-gazing. I wish there were a private channel for slagging off individuals — tho' ideally it wouldn't happen at all, you little toe-rag ;-)   That way, those interested in info about the subject would be able to get to it, without distraction.
And, surely, there are just TOO many threads, even discounting the Bulletin Board!