ok so i have a BBW free dating site running adsense all was going great till few months ago when started seeing increasing public service ads which seems to happening to quite a few people lately so instead showing PSA goolge allow you to enter url of a page containing html of your own ads or another banner if google cant manage to disply a ad so my question is can you add url to page containg yahoo or another ad network code dont see why you cant if google cant provide you with a advertisment then your going use one that will