Google’s John Mueller and Gary Illyes announced on Twitter that the mobile intrusive interstitial penalty has officially rolled out.
Google announced on their blog back in August that a new penalty would be released on January 10 that would penalize websites that were blocking their website with “intrusive interstitials.”
Some examples of what “intrusive interstitials” are:
1. A popup that covers the main content either after a user visits the page, or while looking through the page.
2. Showing an interstitial that the web user has to close before getting to the main content.
3. Using a layout where the above-the-fold appears to be a standalone interstitial, but the content has been inlined underneath the fold.