Update: (2013-12-21, 7:55 PM ET)
I have released version 1.34 with fixes for the issues with Verizon Usage Monitor caused by Verizon's newly formatted usage summary page.
Update: (2011-07-03, 2:52 PM ET)
I have released version 1.28 with fixes for the issues with Verizon Usage Monitor caused by Verizon's newly formatted usage summary page as well as fixes for Password / Login credential management issues some people have been expriencing. Please upgrade to version 1.28 or later below.
Update: (2011-03-24, 4:11 PM ET)
A number of people have emailed me because Verizon Usage Monitor does not appear to work on Firefox 4.0. This is because Verizon Usage Monitor is located on the "status bar" on Firefox's user interface, which was renamed to "Add-ons Bar" and hidden by default in Firefox 4.0. The extension actually works as expected, but is simply hidden due to Firefox's new default configuration.
I am working to determine a new home for VzUm on the Firefox user inteface, and will be releasing a new version shortly.
In the mean time, you can re-enable the Add-ons Bar by going to View >> Toolbars >> Add-on Bar.
Windows: [Ctrl + /] -- Mac OS X: [Command + /]
Submit bug reports to http://jaybaldwin.com/bug-report?sft=vzum