This add-on was fine until the last version, then scripts started slowing my browser down. The method for reporting problems was cumbersome to say the least, and I'm kind of tired of being the user caught in the middle of this internet war. Websites everywhere are trying to block our ability to reduce their ads, and folks creating the add-ons seem to be pushing back, but break them in the process. Proper QA has gone away, as all of us are being used as beta testers with poor ways to report issues back to the developers. That would not have flown in my day of developing software.