In terms of mobile ad fraud, ad stacking refers to placing multiple ads on top of one another within a mobile application or mobile website. This technique is used by fraudsters to artificially inflate the number of ad impressions and clicks, making it seem like the ad has been viewed or clicked on more times than it actually has, thereby increasing their ad revenue. Ad stacking can also be used to hide the actual ad from being viewed so that users cannot interact with it.
Ad stacking is harmful to mobile marketers because it can lead to significant financial losses. Fraudsters use ad stacking to artificially inflate the number of ad impressions and clicks, thereby increasing their ad revenue. This means that advertisers may be paying for ad impressions and clicks that are not real, and they may be paying for fraudulent traffic, which can skew their analytics and make it difficult to determine the effectiveness of their campaigns.
Ad stacking can also lead to a poor user experience, as it can make the mobile app or website feel cluttered and overwhelming. As a result, users may feel bombarded with ads and may end up leaving the app or website altogether. Therefore, ad stacking can lead to a lower engagement rate and a higher bounce rate for the app or website, which can negatively impact the overall performance of mobile marketing campaigns.