What kind of link are you talking about? And the link you have in your post goes nowhere. How about a link to your blog as well as whatever it is that you are trying to display on your site and where it is supposed to be displayed?
OK I see your blog here http://adria74.wordpress.com/ (I got a 404 error when I used your link) When you added the link to your blogroll (under manage>links) did you categorize it as blogroll? In the list of links, does it show as visible?