There is a new discussion section on LessWrong.
According to the (updated) About page:
The Less Wrong discussion area is for topics not yet ready or not suitable for normal top level posts. To post a new discussion, select "Post to: Less Wrong Discussion" from the Create new article page. Comment on discussion posts as you would elsewhere on the site.
Votes on posts are worth ±10 points on the main site and ±1 point in the discussion area. [...] anyone can post to the discussion area.
(There is a link at the top right, under the banner)