Very nice Banners, but sadly we cant sport such... violates the max dimensions for images in the signature D:
The idea for the fake ad banners for each faction was a dry attempt at being funny---using it in my signature line was a bit of an afterthought. I remember checking whether it would even be allowed (because I think this thing will give you an error message if you try to insert a signature that doesn't fit the dimensions), and I concluded it was kosher.
Now that I'm home (and not on my Android), I did some sleuthing. I think that using the banners as signatures is within the rules. The website says that images in the signature line must be within 640x112 pixels.

My image is 518x81 pixels.

So I guess I'm okay. I appreciate you giving me a heads up, though and you can certainly point something out for me if I'm missing something.
Oddly enough, this website actually makes the images larger than how they appear on my Mac. I like 'em smaller, but this forum increases their size for some reason. But still the right pixel count.
I still wonder where everyone gets their skinny signature images, though.