Secret ninja skill. login and out 10-20 times and you will be able to post siggy. This also raises your newbie level 
@Anonymous wrote:Secret ninja skill. login and out 10-20 times and you will be able to post siggy. This also raises your newbie level
Interesting. So the number of signins has something to do with the ability to use HTML sig and also the rank here. Another one to add to the list. Thanks for posting.