Rated 3 out of 5 stars
Great addon in theory, maybe works too well. I have used NoScript and I do know that this addon and NoScript both block different elements and should be used together. However this addon requires too much customisation . Also it would be useful to have an option to allow requests to/from a particular domain; at the moment both are separate options (unidirectional). One good point of this addon is that is has a small memory footprint compared to other security addons.
If someone could produce a whitelist (much like Easylist for Adblock Plus) - this would cut down on the tedious initial customisation of the addon and I would be more inclined to use it. However, I do recommend this for the more paranoid Firefox user if they can handle tweaking from the outset. I'll stick to my trusted 5 security addons of NoScript, Adblock Plus, Ghostery, BetterPrivacy and CookieCuller for now.