Even with the discussion section, there are ideas or questions too short or inchoate to be worth a post.
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
You can use http://lesswrong.com/r/all/recentposts/ if you don't mind manually skipping over threads from subforums you're not interested in. (On Reddit you can put together more specific combinations like this, or just configure your front page to show particular reddits, but neither of those seems to work here.)