When people have images in their sigs that have hyperlinks, the entire horizontal line becomes a link, even the area outside of the image. This is really annoying when I accidentally click a link when I'm just trying to focus the window. I'll try and turn my sig into an example and then update this post. Edit: I figured it out. See post 8 in this thread. Edit 2: It turns out that this happens for any linked images that have [ left ], [ right ] or [ center ] tags inside the [ url ] tags. It's not limited to signatures, that's just where you most commonly see justified images. Edit 3: Okay, I've narrowed it down to the actual bug. When [ left ], [ right ] or [ center ] justified elements are inside [ url ] tags, the entire horizontal space becomes a link. It doesn't matter if it's text or images, and it doesn't have anything to do with being in a signature.