Trying to figure something out here. I know that you will only get credit for a persons purchase on amazon if your cookie is loaded on their machine. I am assuming that mobile devices would be a different story. Even if a persons goes to amazon through your link on a mobile device.... chances are (IF) they make a purchase it would be on the amazon app and not the browser. Does that app take cookies into consideration? If not... wouldn't it make more sense to have a redirect script that points mobile users to an adsense site instead of amazon? A lot easier for mobile users to click an ad instead of making a browser purchase.