There must be a caching problem with your ISP. Try this address: http://socialsquare.x10.mx/?foo The ?foo should force a refresh through your ISP's cache.
That's odd. The last link I posted takes me to your site. I can definitely verify that it's working. All of the dates listed point out that you just created your hosting account. Give it 24 hours and then flush the dns and clear the browser cache again. Reply back here if it still isn't working later.