I really like AdBlocker Ultimate, because it keeps those annoying ads from pestering me when I'm doing something on sites. I've found that it blocks all ads, which I really like, none can sneak through. when I'm on Yahoo, they ask me to turn it off or even allow them in AdBlocker, but if I wanted to allow ads, I wouldn't be using AdBlocker in the first place, so I just close that window whenever it pops onto the page. I love this app and would recommend it wholeheartedly to anyone.