Posters and commenters should learn (and be taught) to self-moderate. If the moderation culture consistently downvotes posts that are not good enough for the front page into deep negative, posters will think twice before posting something predictably unworthy.
I think an additional endorsement to downvote worthless posts, not just bad ones, should be included in the moderation guidelines.
I think that three posts a day over and above Yudkowsky and/or Hanson posts might be enough. Where anything that gets voted to 0 or below doesn't count, nor do quick links.
Say you differently, readers? I'm just trying to space things out so we don't get overloaded with everything, all at once... if it turns out that people just have more to say than this, sustainably in the long term, then we can raise the posting speed.