[Pierre-Marie Baty]

While we're at it here's something that should be fun to do, however I'm quite clueless on how to do it.

I figured out at some point that a certain user on a certain forum had turned its signature in a way such as when you hit the "reload" button on your browser, the image displayed in his signature at the bottom of each of his posts was changing each time.

Do you know how he might have done it ?
All I can say is that I believe there's some PHP involved.