Une extension faite par des branques, c.f. l'échec monstrueux d'envoi de mails en copie visible à tous les utilisateurs.
En plus de ça, l'extension envoie des informations à chaque ouverture du navigateur :
https://www.dsfc.net/internet/tracking/un-tracker-cache-dans-ghostery/
Il n'y a strictement aucune raison de ne pas utiliser uBlock à la place, qui en plus fait bloqueur de publicités.
C'est étonnant que Mozilla mette une telle extension en avant.

Can't download it because it says because of a connection failure. Seems to be a common problem with firefox. Seems like they would have fixed it by now since alot of people can't download any add ons because of it.

try

Por lo rápida y practica

Terrible rubbish extension. I found it to be SLOWING firefox down instead of speeding it up and it blocked me out of some of my most used sites. On one site despite disabling the tracking it still wouldn't let me in. Now that I have disabled it on Firefox everything is working fine.

DO NOT USE THIS RUBBISH ADD-ON!

Koo

It displays annoying red circle in the corner, or sometimes a big red rectangle, which shows how many counters it blocked. There is no way to switch it off.

PS: with respect to developer's response, I was unable to find the ways to get to settings. When I click the icon, I don't get to settings. Users should not spend time discover how to get rid of annoying alerts (any alert is annoying if it is on the area alotted for displaying webpages), such alerts should be off by default, and getting to settings should be intuitive.

Пропускает янднекс.директ. Замето притормаживал фаерфокс. После удаления этого расширения, проблема пропала. Не нашел как добавить в список блокировки в ручную.

Love it better than chrome

Ghostery is breaking our application (by replacing IDs in legitimate requests sent to our backend), causing Denial of Service for our users who have Ghostery installed. Their support has been unresponsive for more than 2 weeks. This is simply not OK.

https://www.ghostery.com/blog/ghostery-news/ghostery-email-incident-update/ Merci de partager mon adresse mail avec le monde entier !!!!
Erreur impardonnable !

Again, absolutly wonderful

Eine Panne nach der anderen bzgl. Privacy (zuletzt alle E-Mail-Adressen der angemeldeten User lesbar für alle mitgeschickt).

This is an extension developed by an advertising company. Use Privacy Badger (https://addons.mozilla.org/en-US/firefox/addon/privacy-badger17/) instead.

EDIT: Well, turns out I was completely wrong, Ghostery seems to have been acquired by a more trustworthy company. I'm changing this review to a positive one.

好像效果不是很明显