Google has confirmed that it has made a change to its advertising policies, now banning the use of Google advertisements on websites that utilise 'pop-under' ads. Pop-under adverts load beneath the browser that users are working from, and so can only be seen once the browser is minimised. Google has said that it believes these types are ads do not “provide a good user experience, and therefore are not suitable for Google”. In future, any website that triggers these “pop-under” windows will no longer be able to run Google ads. Google hopes that the new policy will help to “ensure a positive user experience” and “maintain a healthy ads ecosystem that benefits both publishers and advertisers”.