Hi Will,
I agree with you that this is an intriguing idea, but
1. Look at http://www.eurekster.com/
2. Privacy Issues (see gmail)
3. Too many sites
If you feel nevertheless inclined towards programming
this, go ahead. I will be one of the first to test your new
interface and give feedback.
Kind
So, you're suggesting to integrate user-feedback into a site/page's ranking?
One might argue that Google already does this quite well, by scouring
their httpd logs for signs of user dissatisfaction, such as needing to
click past the first page.
http://www.google.com/search?q=google+%22first+page%