Hi, my first topic here =) I was trying tumblr today and realized that this site might have a great potencial for some linkback. The main reason i think that is because you can set up , on each tumblr blog, at least 5 RSS FEEDS sources, and that includes your social bookmarking accounts (like delicious). So to make a test, i create a blog, inserted the feed link and every hour it updates getting the latest links from my delicious account. The links created is all **************** and since you can choose your domain name (with tumblr.com on the end) you probly could do something like: 1. Creating a user on any bookmark social site 2. Only added itens from some specific category to this user, lets say WEB DESIGN 3. Create a tumblr blog with the name, um, webdesign.tumblr.com (probly taken already ) and only post infos about design. Wouldnt that be some really good source of backlinks to yourself?