Mac-Zone Junk Stopper Light

Well, I downloaded and restarted but I still get ads on Safari, notably the especially annoying animated one on MyYahoo!, while it blocks half the title header on the NY Times page. More alarming, I can't Find any evidence of the existence of Mac-Zone on my HD other than the .dmg, the install package and the receipt. Without knowing what this app is exactly supposed to do (there's no instructions) I have to wait for more evidence and more feedback before I judge it.