Webutation.org have released an addon for Firefox
Quoted from [URL="http://avinashtech.net
http://img842.imageshack.us/img842/6...ationworks.png
2. Clicking on the button will show more information about the website
http://img217.imageshack.us/img217/5...tionavtech.png
http://img718.imageshack.us/img718/8...ionavtech2.png
PS: Their homepage says "Download Chrome extension" at the top of the page,but shows FF icon, maybe Chrome extension is in development