Ad Stacking
Ad Stacking
Ad stacking is a fraud technique where multiple ads are layered on top of each other in a single ad placement. While only the top ad is visible, if a user clicks on it, the click is then registered for all ads in the stack. The best way to detect whether you are subject to ad stacking is to look at your conversion from impression to click/install. Campaigns impacted by ad stacking or other sorts of display fraud tend to have higher impressions and lower click through rates or install rates.