Absolutely loved Ghostery for the time I used it, but it seems as if ads are becoming far more aggressive. Youtube in of itself has removed overlay ads and now they easily skate by the Ghostery blocker to play before every video starts.

Cette extension collecte trop de données privée pour être honnête. De plus, elle perturbe l'affichage de certains site, comme certains champs obligatoire pour valider un panier!
A désinstaller de toute urgence!!

Does not block website pop ups whatsoever anymore. Garbage.

I've only had Ghostery for about 12 hours, and I love it already! I read the news on Yahoo homepage daily, and I'm sick to death of seeing big boob ads, fart ads, and toenail fungus ads in the sidebar (how disgusting is that!). There is no way to stop most of these ads, so I decided to add an ad blocker to Firefox. All I can say is that I should have done it months ago - No more boobs. No more cracked yellow toenails. No more fart ads. I'm in heaven every time I see those empty gray boxes in the sidebar. Thank you Ghostery and Firefox!