Here is our monthly place to discuss Less Wrong topics that have not appeared in recent posts.
(Carl's open thread for March was only a week ago or thereabouts, but if we're having these monthly then I think it's better for them to appear near -- ideally at -- the start of each month, to make it that little bit easier to find something when you can remember roughly when it was posted. The fact that that open thread has had 69 comments in that time seems like good evidence that "almost anyone can post articles" is sufficient reason for not bothering with open threads.)
[EDIT, 2009-04-04: oops, I meant "is NOT sufficient reason" in that last sentence. D'oh.]