Last few months I have been working on a social bookmarking site (http://wordgeist.com), to help webmaster to promote the content of your sites. all you need to do is register and start submitting the content of your sites and blogs. The submissions need to have 4 votes to be see your post in the front page. Please invite you friends and your readers. The site is PR 3 and all the links are setup to be dofollow. Enjoy