It used to be that there was a large space after your signature before the next post if your post wasn't very long but I made it so the signatures go to the bottom now. It still takes up the same exact space, it's just floated down instead of up in the table cell. You'll only notice it on short posts because the signature and post heights aren't as tall as the user info on the left. I think it makes it easier to read posts if the signature isn't butt up against the post.
"You must try to generate happiness within yourself. If you aren't happy in one place, chances are you won't be happy anyplace." -- Ernie Banks