It actually works and works extremely well! Update: Ok, here it is a year later and I have nothing to complain about at all! I've not had one issue with AdBlocker Ultimate. In fact it works so well that I normally don't even think about it! I can't imagine watching youtube without it! I never, ever see commercials on youtube, Period!

best block adds for Firefox

excellent

Realy decent add on blocking all garbage

The whitelist is not properly supported. Once the page is loaded, items added to the whitelist are still blocked. White-listed items are included only after such a page is refreshed.

Relieved me from annoying pop-ups! Thank you.

1000 ads blocked in 24 hours. Can watch videos from web sites (ABC iView, 10Play australia Youtube etc) without commercials.

Gets the job done as far as blocking ads is concerned

2 hours in and it has supposedly blocked 100 different ads, so far I believe the extension is working great. If something changes I will update the review.