I'm using it a couple ofyears; I'm not sure how exactly it works, but it provides a peace of miind; so, I suppose it does what it says it does. Well done.
The only reason I rate it 4 stars instead of 5, is that it always things need work for further and constant improvement.

automatic cookie decline is a game changer

Mise à jours régulières, bloque toute les pub, il peu également bloquer les fonctionnalité de certain site ou les pop-up des cookie, penser a la désactivé temporairement, le temps d'effectuer les manipulation pour le bon fonctionnement du site où vous vous trouver puis ré-activer le

Ghostery est très utile pour accélérer la navigation et limiter les cookies aux cookies obligatoires ou aux coolies nécessaires sur les sites déterminés.

Great add-on, seems to work fine, FOSS, doesn't ask for you to leave a review too often.

Works well just slows down a bit youtube when used for a long time. You can restart ghostery by pausing (1day) and unpausing it fixing the issue.

Love Ghostery for ad blocking etc. Unfortunately more and more sites, especially her in the UK are refusing access whilst Ghostery is enabled. Developers need to find a work around for this or we'll be tracked and swamped with ads pretty soon.

Иногда блокирует лишнее. Например, некоторые форматы изображений и даже нестандартные скролл-бары браузерных окон (CSS-класс banner).

Seems to work great. No problems so far. 5 stars is not unreasonable.