I have a large network of interalated sites that I dont want Google to link together. With any advertising or affiliate program ive found if you use the same account they leave a footprint which can link the sites (ie. an account identifier in the ad serving code). Is there any advertising or affiliate programs you know of that work well and don't have a footprint, ie. every ad code generated is unique? Or is the only way to do it to create a new advertising or affiliate account for each and every website?