Clickbank states that you will probably not get credit for sales if you are using frames. They have a particular product provider that suggests frames if you want to use them. They even have on their page the script to produce the code. I have been trying to get an answer back from Clickbank, was making some headway when I informed them of this, and then when I showed them the information all coorespondence from Clickbank stopped. Is anyone using framed pages with clickbank products?
I remember I asked this few weeks ago, and most people said, that it's better not to use frames to stay on a safe side. I also tried to contact Clickbank and ask them about this, but got no response.