This is great for people visiting websites with a lot of pop-up, pop-under, pop-tab etc. It blocks all of them.

I used to use AdBlock Plus in conjunction with NoScript and I was quite the power-user. Despite this, I used to get some popping ads, some scripts were even getting past and loading inside/redirecting my main tab...

After trying AdBlocker Ultimate, I just uninstalled all of the other blocking extensions. This is enough by itself. I haven't had a single ad intruding on me with this (including YouTube).

I fully recommend this extension. No problems so far and does what it promises.