If you believe that showing off large ads on mobile devices will really get the user’s attention, you may be in for a bad surprise. In a Google announcement, it was said that app interstitial ads covering “significant amount of content” on your page isn’t just annoying, but non-mobile-friendly and won’t rank as well as those pages that are truly mobile-friendly.
According to Google, this will start up on November 1, 2015, but any mobile-friendly testing tools will show these pages as not being mobile-friendly as of today. Google said:
After November 1, mobile web pages that show an app install interstitial that hides a significant amount of content on the transition from the search result page will no longer be considered mobile-friendly. This does not affect other types of interstitials. As an alternative to app install interstitials, browsers[should] provide ways to promote an app that are more user-friendly.
The following image is what we’re talking about with large ads covering a large chunk of the content:
In reality, this is an example of what ads are *supposed* to look like:
The ad example shown in the second image is in the native Apple-supported Smart Banners and Google Chrome-supported App Install Banners. They are considered mobile friendly. The big one is not only not mobile-friendly, but it’s a really big pain in the but to deal with when you’re trying to consume your content.