It will not be possible to use adsenseformobileapps.com or other controls to keep mobile Display ads from showing on all apps, including interstitial ads.

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http://feeds.searchengineland.com/~r/searchengineland/~3/1gETBdgYikU/action-needed-if-youre-using-adsenseformobileapps-com-to-exclude-apps-from-google-display-campaigns-303080