There is not alot about a proxy site that you can comment on design wise, because the user is not after your content etc... Their just using your site to get at other sites.
The first thing that comes to my mind when I loaded the page is that I am trying to buy my own domain. I really didn't get the proxy jist of it in the beginning. I'm sure it's there...... someplace . The site looks like it has content, I'm not a good one to judge it though since I'm not sure what the content represented.