If you have monetized your blog, you will be interested in checking how much you have earned through the clicks on your blog. Adsense Notifier is a Firefox plugin which will display your Adsense earnings in the statusbar.
Adsense Notifier simply shows your Adsense statistics on the status bar and updates the statistics automatically.
Adsense Notifier is highly configurable and should be useful for everyone that uses Adsense in their blog or website.
Once you install the plugin, go to Tools->Add-ons and select the Adsense notifier plugin and select options. You need to enter the Adsense user name and password to login into your account. You can also set the time between each updates.