So you know those stupid height (and width?) limits that devs have imposed to forum signatures from their ivory tower?
There exists an easy way to circumvent them!
First upload some small image to some server and put it as your signature, then, just change the image on the server, and you can have ANY signature that you want!
As a proof of concept, I have made my own signature width 1 pixel over the limits. (257 pixels wide)