I'll try to tackle two birds with one stone. Nothing really profound, but just some things to keep in mind.
Please refrain from putting large and animated graphics in your signature. It kind of makes the whole "128 x 128 pixel" rule for the avatar icon moot, and there are still folks with dialup. It's always polite practice to keep your signature under three lines of clever/witty text. If you lack the ability to make your icon fit the guidelines, one of the talented graphic artists on the site will almost certainly be able to help (like Mallin or myself).
Reasonably sized (pixel-wise; the smaller the filesize, the better) signature pictures can replace a textual signature, as long as it hovers around 400 x 40, and is "not too large."
Adult-themed images should be kept in the Adult section. That's why it's there. I like porn as much as the next guy -- okay, I'm a freakin' exhibitionist -- but we do have youth here. We can corrupt their fragile little minds at the meets.
Those in violation of this will probably have their signature shrunk by me. Feel free to fix it.
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