I find that some money can be made from this. It depends on how well you design your website and how well you encourage your visitors to click on the banners. Your website has to be carefully designed and the wordings selected to induce people to go to the merchant you represent. Some merchants pay 5%, some 10%, and some more. By carefully choosing the scrnshots applescript upload folder action merchant to match the contents of your website you will get more click-throughs. More click-throughs means more sales. It’s a numbers game.