That is because we are no longer using html. To do the bucketstamps you will need to use our custom bulletin board code. There is a link in my siggy on this. We have two options one for the 2x2 size and one for the 3x3 size.
Use this code around the url
Code:
[stamp3] your url goes in the middle [/stamp3]
I will go fix your siggy for you.
I added it but with your photostamp in there it puts your siggy over the limit so some of your graphics are getting cut off. You will need to cut something out to make it all fit.