Google has banned the serving of annoying pop-under ads as the originating source of AdSense ads.
Pop-unders are web browser sessions that are displayed behind a visitor’s active window, and appear once that window closes, revealing ads or other content.
Google now bans all AdSense content from being monetized, when served via pop-unders, or from pages that serve the pop-under ad content.
According to the official Google blog:
“To get your attention, some ads pop up in front of your current browser window, obscuring the content you want to see. Pop-under ads can be annoying as well, as they will “pop under” your window, so that you don’t see them until you minimize your browser. We do not believe these ads provide a good user experience, and therefore are not suitable for Google ads.”
In other words, if you have AdSense ads on your web page, and it launches pop-unders, Google won’t be sending you any money from clicks.
Check out the new Google policies.