Well the problem is saying "100 characters max signature size" will not prevent people from putting disgustingly large images in their signatures. The below code is less than 20 characters, but the image could be 2000x2000.
[code:1]
[/code:1]
So I would have to write something that checked the signature image width x height or something that automatically resizes signatures images that go above a certain point. The thing is, I don't want to do either.
So for the time being if you see someone with an obnoxious signature you should A) Bitch at them until they change it, B) Tell myself, Mike, Raze or Nikon and we will bitch at them about it.