Have I missed where can I place my url in my profile >?
Look it up, it’s there, you just need 10 posts at least 
Welcome to SitePoint marketing_lad, if you follow this link: http://www.sitepoint.com/forums/profile.php?do=editprofile it will take you to the right page.
Almost, unlike other forums you can add your home page straight off. You have to wait 90 days to get a signature though. 