I know the solution is out there but I'm just not hip enough on the terms to google. Basically I'm displaying a couple of banner ads on my website, but the fill rate is low, often leaving empty spaces where the ads would be displayed. Is there some kind of script I can use that switches to an alternative ad when the fill runs out?
Well many companies have an option of adding default ads I mean when there are no ads to run the system will run the ads you have added to default ads section, I have seen it with Google Adsense, Valueclickmedia.com and many others. By the way with which company you are working with?