I wrote an article just a few days ago about the Google Reader Notifier application for Windows computers and was linked by the Download Squad Website who mentioned the Firefox extension with the same name. The only difference between those two applications that share the same name is that one is running in your system tray while the other is reporting the amount of unread news in Google Reader in your status bar.
Google Reader Notifier
Google Reader Notifier is a small application for Windows based operating systems that sits in the system tray notifying the user of new unread items in Google Reader. The amount of unread news are shown in a small window that opens above the system tray. Checks are done periodically and can be configured to be performed every 5 to 120 minutes.
