Comments-view:
  /@@comments
  <script>
    jQuery(document).ready(function () {
        jQuery.get(window.location.href+'/@@comments')
    });
  </script>

Better texts:
  "Be the first to respond."

Preview comment support.
Post exactly once
Subject optional (it is ugly!!)
Gravatar support
Recognize author-responses
Author logged in
OpenID support
Fuzzy dates

Comment index:
  Store successful nonces
  Filter on comment author?
  

Spam stuff:
  Link rel="nofollow"
  Throttle: http://www.intertwingly.net/blog/1647.html
  Preview: http://www.intertwingly.net/blog/1681.html http://www.intertwingly.net/blog/1692.html
  Nonce: http://www.intertwingly.net/blog/1585.html