Or, you could just put a bunch of information into an image and use that as your signature. I don't know anyone who actually does this though....
Oh, wait...
I assume it's okay, since I've never heard any complaints. I'd be happy to help you draw something if you like. I ran into the limit a little while after being here on LOST and thought it kinda sucked...until I visited some forums that don't have the limit. The dang signatures look like topic posts and you can hardly tell when someone stops talking and their signature starts. Very distracting.