Tried to search but got "How do you like us?" Forced to answer, so here it is.

Perfect one for removing ads!

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.