Pop up ads and interstitial ads and too many ads or displaying too many pop up ads are against guidelines of Google which takes user trust by displaying pop up ads when user clicks on it it takes to different website and too many ads lead to google to trust to your website.
Google is taking down on websites which makes users confuse and make their pop-up ads show on their websites all kind of pop-up ads and mobile interstitials and fake interstitials included.
New Interstitial Ad and Pop up Ad Changes
From Next Year(2017) google will not be ranking pages with interstitial ads and importantly pop-up ads followed by fake interstitials.
Everyone Hates interstitial ads and Obstructive banner ads, expecially when browsing on a Mobile device and now google is doing something about it, Starting from next year Google will apply algorithmic ranking penality.
And More Importantly this includes the pop-up ads which trigger while user accesssing the webpage from the search result while scrolling the webpage.
Now these type of fake app inetrstatial will no longer rank as higly starting on January 10th. As said this is a warning period and sites dont need to worry about it until after the upcoming season.
Pop up ads are also targeted as it will be no good user experience and some times users faces difficulties in closing pop-up ads. Though this signal does not affect the desktop pop ups.
Websites Should Avoid Using Interstitial and Pop up Ads
Websites with Annoying pop-ups that cover content may rank lower or ads that cover more than a reasonable amount of space on the little screen.
Here are some examples of techniques that make content less accessible to a user:
Showing a popup that covers the main content, either immediately after the user navigates to a page from the search results, or while they are looking through the page.
Displaying a standalone interstitial that the user has to dismiss before accessing the main content.
Using a layout where the above-the-fold portion of the page appears similar to a standalone interstitial, but the original content has been inlined underneath the fold.
Examples on Interstitial and Pop up Ads Techniques
Here are some examples of techniques that, used responsibly, would not be affected by the new signal which appears to a legal obligation, such as for cookie usage or for age verification, login dialogs where content is not publicly indexable, Banners that use a reasonable amount of screen space and are easily dismissible.
Nor will it affect unobtrusive banner ads, or vignette ads which only appear only when users navigate between pages on the same websites but not when navigating directly to web pages from Search Engines, Social Networks, etc.
In addition, Google will no longer display the Mobile Friendly tag on appropriate web links in Mobile Search results, as nearly all results in Mobile Search now meet this criteria. The algorithmic penalty for non Mobile Friendly web pages will, nonetheless, remain in effect.
Google’s New Mobile Interstitial & Popup Change Applies at Page Level