It certainly does what it's supposed to do, and does it well. I enjoy using it.
Must agree with Mr_Blue_ in that the settings menu needs work. Hence one star less.

The other missing star is because this is compatible with Firefox Mobile, but the implementation really needs work there. It blocks the popups, all right, but the problem is that you have no easy access (or access *at all*) to the settings; there are no options of any kind in about:addons and, when the popup is blocked, you get no warning (the box with trust/deny/redirect/etc.), which hurts its usefulness. Sure, part of it can be blamed on Firefox Mobile being what it is, but still...

I'll gladly change the ranting once the concerns are addressed.

I reviewed This not so long back saying how could of a popup blocker this actually was. After using it for a few weeks or so, ive noticed that this addon surely needs a decent options menu. Looking for sites in your whitelist is horrible. It takes ages if you have alot, which you will after continuous use. Please make a decent options menu, to be able to edit sites ect. Then it will be a superb popup blocker like i first stated.
Please add a decent Options menu guys.

I agree "DandyClubs". A white and black list would be nice.