digg
digg is a fascinating site that combines blogging and social bookmarking. The front page of the site lists the most visited diggs. You can visit the queue to visit blog posts that are waiting to make it to the front page. When you visit the link, you have increased the digg rating. A high enough rating will get the post listed on the front page. Even if you are not interested in visiting the queue, digg offers a great selection of interesting blog posts on its front page.