AdSense Notifier is an extension to Mozilla Firefox that "displays your Adsense earnings on the Firefox statusbar. Adsense Notifier simply shows your adsense stats on the status bar and updates the stats automatically. This is wonderful for anyone with OCD ( or GAD as some have called it ) who needs to check their stats every three seconds to see if they have gotten any more clicks :-p"

Read more and/or download at code.mincus.com