See how much of your monthly download limit you have used just by looking at an icon in the system tray. Much quicker then logging into the Optus site. If you click on the tray icon, you view more detail of your usage, including how far through the month you are, total mega bytes. If you have an off-peak limit as well, it will tell you how much you have used of that too. The application saves last known usage data so if there is a problem with the Internet connection, it will display your usage as it last recorded it; the app features usage simulator; it provides upload information, automatic program updating;you can install themes and it has usage level warnings.