It's been posted as a bulletin on the main site, but, just in case, I thought I'd restate it here. You can now rate stories in half-star increments! The rater works just like before, but if you stay on the left half of a star when you click, you'll get a half star rating instead of a whole one.
While I'm at it, let me also take this opportunity to encourage you to rate and recommend stuff you are reading. Both are one-click operations (you don't need to review), and they will help your favourite stories move up in some of the listings. If you are an an author, definitely recommend your own listings (unless you feel you can't -- in which case may I suggest you post here in the forums with the tag "angst"). It will help the site software out.
Let me know if you have any problems.