Review for Element Inspector by Pinky!
Rated 3 out of 5 stars
Very useful addon but need an option to change modifier key, because Shift-RightClick has a Firefox default function, showing the browser's original context menu (on Google Maps you can confirm this).
This review is for a previous version of the add-on (0.0.6.1-signed).To create your own collections, you must have a Mozilla Add-ons account.