Kidding, right? Puntuado con 1 de 5 estrellas

Useless.

No email alerts ever arrived (during weeks of trial).

The little numbers "1:1" that got added to the toolbar indicated nothing as far as I could tell; no change in the web page in question caused any change in these numbers.

Worst: the clicked-open report window showed me items on pages I had never attached to AlertBox.

All I got was a system tray pop-up every few minutes (with accompanying sound) whether or not the indicated page really had changed.

The online 'support' is equally useless.

Sorry. No pass.

Esta valoración es de una versión anterior del complemento (0.4.6.20111013.1-signed). 

AlertBox currently lacks a good documentation which should be taken care of near future. That should answer most of your queries. Specific answers to your comments:

> Useless

Far from it. At least for current set of users.

> No email alerts ever arrived (during weeks of trial).

See http://pulsvu.com/node/1287. It maybe due to missed settings.

> The little numbers "1:1" ...

They indicate alert counts like: NEW:ALL.

> Worst: the clicked-open report window showed me items on pages I had never attached to AlertBox.

Not possible. An alert cannot be added without user action.

> All I got was a system tray pop-up every few minutes

They are alerts for content changes. If the content changes a lot you can target specific content using visual content locators. They are very handy.

If you need help, you are welcome at the "support" forum or send me an email.