Rated 5 out of 5 stars

This is a must-have addon if you have AdBlock installed.
Their combination is simply brilliant. It helps me a lot, because I can quickly make a new rule every time I find any unhidden ad. Subsequently I can report it to the filter list administrator.
When you use the developer tools included in Firefox to explore the website (Ctrl+Shift+I), the usage is very intuitive.

This review is for a previous version of the add-on (1.2.2.1-signed).