@Borat Sister,
It's amazing what we can see in these tiny avatars. I look at
Craven's avatar and see one those snow monkeys:
It's a regular A2K Rorschach test with every post!
When in doubt, go to the profile page. A larger version of the avatar is usually there (except, strangely enough, for
Borat Sister -- what can explain that?).
The solution, of course, is to make the avatars bigger, and thus more legible. So far, that has been my one-man crusade.