2) google ads use fixed size it is not automatically resized , you can specify google ads to display only in desktop and other ads to display only in mobile device . you can use Advanced Module Manager extention to do this. <a href="http://www.nonumber.nl/images/extensions/advancedmodulemanager/screenshots/assignments.png">http://www.nonumber.nl/images/extensions/advancedmodulemanager/screenshots/assignments.png</a> I hope this help you.