I've always been in favor of them since I joined nVNews. Glad to see they are here, but with the file size restriction to 19.5KB, it's really hard to get a good Sig made. I must say, though, they don't quite have the same effect here as they do on a Gaming Clan's website, so if they get removed here, no biggie.
Maybe there should be an overall Signature rule, like Ubi.com has on their forums;
Originally Posted by Ubi.com
The maximum allowed for sig pics is 500 in width by 150 in height for all images combined (i.e. all images that you use have to fit in a 500 x 150 box). The maximum file size should be no more than 60kb.
You can use up to 4 lines of text, including spaces (each line no more than 80 characters in length).