I'm going to make a practical suggestion: It bothers me to read threads that are mostly composed of short answers, or pages of threads with short answers.
If someone's post is less than 2 complete lines you( Penguinboy or Ant or whoever has access to the site's code) should make that post more compact(occupy less space). If a person doesn't have much to say, it shouldn't take a lot of blank space for nothing.
I realize this can destroy the thread symmetry( and avatars will disappear in short posts, or be of smaller size), and if it's such a big problem, perhaps you have some other advice?