http://www.sharma-home.net/software/vote/vote.html
If you find this interesting, you're welcome to download this small
piece of open source software and try it out. The more users there are,
the more useful this tool will be.
The mozilla firefox extension requires you to customize the toolbar and
manually add the new button to the toolbar. It takes about 5 mins for
a new submission to show up on the results page.
-Arun