Im looking at a website http://www.promotional-merchandise.org.uk/dir/cat_co_650.htm That lists links to websites, but when you look at the http://siteexplorer.search.yahoo.com/ results for the sites listed, the link doesn't show up. Is this link still valueable for SEO?
They aren't showing up because it looks like the "Visit Website" link where your site URL would go is using a redirect and not pointing directly at the target website.