I have joined blog rush and added the widget on this site.  You can view the widget down a little bit and on the left side of this page.  The widget will show headlines from other tech blogs and provide a one stop area for recent posts made by similar blogs.  If you click on the bottom of the widget itself, it will bring you to the blog rush homepage so that you can sign up and add it to your blog.  They are supposed to help drive traffic through your site and promote other blogs that post similar stories to your own content.  Feel free to join up as this is a good way to meet other bloggers in your niche and a good way to get some extra traffic to your site.