Trying to have an impact in the brave new world of web advertising? You could match an ad to a web page’s content — such as putting a car ad on an auto consumer website. Or, you could make it stand out with eye-catching pop-up graphics and video. But don’t waste your marketing budget putting the two strategies together. The first large-scale study looking at thousands of online ad campaigns says that in combination, these approaches make viewers feel like their privacy is being invaded – and turns them off. But don’t waste your marketing budget putting the two strategies together.