Enable the Vbulletin Code, becuase it’ll work for sigs, posts and many others, it’ll use less bandwidth, becuase some people might use off-site links, and it’ll save people from saving then uploading for it to turn on. Its in the control pannel, under option, scroll down or press CTRL+F and type t’il you find the correct one, it would be really nice if it worked. Simple suggestion, hope you take it into consideration.
We’ll discuss it and take it from there 
I will see what I can do, but would rather wait till the next release of vBulletin cuz it would require re-hacking…
well, If I get the time, I will install a hack to limit IMG tag size in sigs only!