I just found this the other day.. It's a really great desktop widget to follow your AdSense incomes without having to log onto your AdSense account ten times a day (like I did before). It's with the Yahoo Widgets which I think is really great, this "AdSensor" widget was the only reason I installed the Yahoo desktop widget in the first place http://www.mvnet.fi/index.php?osio=Tietokoneet&sivu=Widgetit_-_AdSensor#adsensor big up! thanks for a great adsense widget!
Im a bit cautious of things like that and for what its worth, when it comes to adsense i prefer to login at the normal page.
I agree to what "pipes" said. I also prefer to login to my adsense account instead of using any adsense widget or even plugin.