Well as you can see the title says it all. Wondering whether anyone has tried this? Or do you think that this code will work for each search no matter what kind of engine they will be using. In the meantime i will send adsense support a email to ask if it is possible and if not whether they are going to implement it.
I don't think so. You set it to either search Google or user specified sites. Actually, maybe when you set the custom sites to Froogle and Local then it might work. I doubt it though since it's done via a site: command and Froogle results aren't indexed...