4 stars, because no ad is acceptable, I get that It's optional, but it's on by default?

Bis jetzt hat er mich noch nie im Stich gelassen. Auf der ersten Seite von CHIP hat er gerade 19 Werbeanzeigen geblockt, da sieht man mal wie aufdringlich manche Webseiten in wirklichkeit sind.

The best adblocker on Firefox ever and works awesome from almost 20 years!!
Very customizable, has pre-built online lists of filters that can be added and you can manually block most elements in any pages!
******
The only 2 missing features to make it "the one that rule them all" for me:
A settings backup that can be sync online between various gadgets, or to be saved away and easily re-applied on a fresh installed device,
and the second one: a clearly explained internal list of rules to be easily applied on manual element blocks!
Imagine a small drop-down that offers you all the available filters that can be applied to an element and let you choose which one you gonna apply on a link or whatever!

Youtube Ads always leaking at the start of every session
it might be due to accessing their website through firefox's quick homepage buttons
but i'm not sure anymore refreshing and restarting browser isn't helping this time

Cool

De beste Applikatie voor blokkeren van Adverties in het web!!