Ad Experience: Ad Density Higher Than 30%
When ads on a mobile page take up more than 30% of the vertical height of the main content portion of the page, the result is a disruptive ad experience, regardless of whether these ads are text, video, or static images. This includes “sticky” ads and in-line ads. This kind of density makes it very difficult to focus on text content on a mobile device, and can lead to frustrated users.
Included ad experiences tested: 50% single-column ad density, 35% single-column ad density, 30% single-column ad density.