In my eternal effort to grow traffic, I have signed up with TheGoodBlogs.  TheGoodBlogs sign up was quick and easy and within 5 minutes I had set up a widget which installed flawlessly into a Drupal block.  This is hardly surprising--TheGoodBlogs is powered by Drupal.  The widget isn't working right Blogger yet.  It previews fine, but then doesn't show up once the modified template is saved.

They categorize your site and then display your link to other bloggers who are in similar categories.  There isn't any money in it--essentially it is a link trading scheme.  It is up to you to montetize your site if you want to earn money.