Hehe - posted too early last time.
OK - not sure if this is the right place to post this - but if you have your website address in your signature/profile, and what it to be an active link so that people can click through to your website, then here's how...
In the box type:
<a href="http://your.website.address">your.website.address</a>
That should do the trick - worked for me anyway! Sorry of this is a repetition, but couldn't find the info anywhere else.
D