One of the most essential privacy add ons, which does not interfere with the regular browsing experience.

I learned about other sites tracking my activity only because I switched from a very popular browser to Firefox. And am very thankful I did make that change! Mozilla is awesome. Thank you!!!

I am a calm, intelligent and wise person.

This add-on use to *almost* be all you needed for privacy/ad blocking. It was a primary go-to to confirm which sites to block with my other blocker technologies. It now seems so "dumbed down" that I am going to disabled it across all my device. I just don't see it taking a stand and blocking. All kinds of sites that clearly provide beacons, ads, etc. (as evident right from the site name! or that use to be blocked!) "don't appear" to be tracking or "we haven't made up our minds", or what ever other wimp-out lawyer speak is used now. Toughen up. Or get out of the race.