Am (can I call you Am, ShortNCuddlyAm?) is right. I suppose your signature looks like this:
(URL="http://(url]www.smashwords.com/profile/view/bewrite(/url]"](COLOR="Blue"](U](B]Visit the the BeWrite Books bookstore at Smashwords.(/B](/U](/COLOR](/URL]
All you need to do is delete the red parts, then it should work. If in doubt: cite dreams's entry and then copy->paste her link into your signature
P.S.: I have changed the opening
[s to
(s, so you can see the code instead of the effect.