Use this as a guideline: everytime you post something and your signature is larger than your post, then your sig is too big and obnoxious for other readers.
hmmmm.... I can just see people starting to write novels of nonsense just to make sure thier post is larger than their sig.
As for any sigs in this thread. The ones that are written, I think are fine. The image - while nice, only becomes an issue when you get a thread with about 10 of those suckers on a single screen. But I don't think there is a rule against them.
Petor, although Karzaks comment might seem out of line, you did ask for comments about your sig and Karzaks comment is something I hear quite often, not just on boards.