I don't have time for a full review at the moment, but this reminds me of a widget offered by http://goosegrade.com/ http://goosegrade.com/ Different approache

I don't have time for a full review at the moment, but this reminds me of a widget offered by http://goosegrade.com/ http://goosegrade.com/ Different approaches, but seems to be very similar functionality. (The interface barely worked for me with FF2 and Vista).