I'm not too sure about Adblock Plus (if there are copies with the same name), but there are a billion "Adblock" plugins, and some are better than others. Some do a good job of filtering out, but hog so much CPU as to make surfing either painful or impossible. I have ABP in Chrome, and it works nicely. Had others, nightmare. I'll sacrifice a little CPU (I have a beast of a machine, so I have TONNES of CPU power), but I won't tolerate some plugin that thinks it's the only thing on my machine.