Heres a small widgets you can stick on site that allows users to rate the individual page or website as a whole, depending on which you choose http://www.rateit.org.uk/
Maybe the site did not completely load for me? It is a great idea, good site, but about the single most plain and boring site I've ever stumbled upon. Great start though.
Is that a stand-alone site or just a page supplying the code for the widget from another site? I'm using IE7 and all I saw was a white page with a purple block in the middle of it containing the code and a brief explanation...also a feedback tab off to the right. The concept for the widget is cool, but unless a friend sent me an email explaining the whole thing with your link attached, I'd never find it, never use it because you explain it better in your post here then you do on the website. But like the other reviewer said, maybe the whole page didn't load for me. Did you validate it on IE7? Sincerely, Mr. Unloadingzone