My idea here is to have a post where we can discuss thoughts on how well particular posts fit LW without cluttering the post's own comments. StackExchange sites do something similar where reviewers will sometimes post in meta to discuss posts they were unsure if they should perform moderation on, although the focus here is really meant to be on fit (but maybe we'll want to expand the notion later).
Format for comment threads here is:
Top level comment is link to post.
Comments are thoughts on if the post fits LW or not.