http://www.kaboodle.com - Social shopping, Kaboodle is great for Ecommerce sites...Install toolbar button and your ready to go. http://www.thisnext.com - Social shopping, This next is great for Ecommerce sites. http://www.hoobly.com - High PR classified site. Easily add your products and since they have such a high PR your listing will show up in minutes. http://www.squidoo.com I notice these sites has no out link except profile pages. where can i use these social site to build links to my site? yes, digg is very obvious to where to build links.