This blocker will sell data to companies, as has been proven in the past. The trackers it has "whitelisted" are also sketchy.

I use this add-on in conjunction with Firefox's "Strict" setting in the Enhanced Tracking Protection on the Privacy & Security settings page. It works!

Nasty app...

saya pakai addons ini baru seminggu. produk ini saya pakai mengingat rekomendasi dari firefox. saat ini tidak ada masalah dan sangat membantu thanks. bisnis wifi rumahan

Just a comment to the developers. For an extension that is supposed to block ads and make my browsing experience smoother and less annoying... you pulled a truly boneheaded move. The very first site I went to after installing the Ghostery extension was Quora, and before I even had a chance to login to that site, what happened?

GHOSTERY POPPED UP AN AD ASKING ME TO UPGRADE TO A PAID VERSION OF ITSELF!

Really? I mean, you couldn't at least wait a day or two for me to try it out first? My very first experience with your ad-blocking capabilities is an AD FROM YOU suggesting that I upgrade? What were you thinking?

It looks like a nice enough product if it does what it says it does, but you would think at the very least it would make a more intentional effort to follow its own guiding principles. It's somewhat hypocritical the way it happened.