I'm afraid this is a known glitch with the Friend Feed sidebar widget. I've gone ahead and deleted the widget from your sidebar so the website should be usable again. I apologize for the inconvenience! Usually it is fine, but very rarely the Friend Feed might contain code that breaks the HTML of the rest of the page. This is something we have been aware of and are working on fixing, though unfortunately it requires a very difficult and involved fix so it is taking some work.