Everyone has to make their own decision on the ethics of using ABP/NoScript, but I can guarantee you that DoubleClick invests substantial resources in trying to

Everyone has to make their own decision on the ethics of using ABP/NoScript, but I can guarantee you that DoubleClick invests substantial resources in trying to prevent malware ads, and they wouldn't be in the position they are today if they didn't. Legitimate publishers like Rodale (Runner's World) and Conde Nast (Ars)care a great deal about these issues. These are big, responsible companies that care about their users, and about the sustainability of distributing high quality, advertising-supported content on the web. Sometimes things go wrong, even when everyone has the best of intentions.