I'm mainly interested in joining a different forum than bitcointalk due to the amount of chaff overwhelming any actual content there. It's the usual problem - as a forum grows, off-topic posts, bickering and "funny" memes tend to take over.
Generally speaking, this seems to be a variant of the litter problem: let trash remain unpicked in a public space, and you'll soon find more of it all over. If this forum grows, it will, IMO, happen here as well.
What's the moderation policy on low-quality and off-topic posting? Can self-moderation for threads be enabled?