I have had Amazon links on my site for quite a while now however I don't really get many sales for the products I advertise, it tends to just be people clicking and then buying other things at a later date. Previously I didn't get much traffic, probably around 200 clicks a month through my Amazon links but this got me around 3 random sales. Now my traffic has increased a lot to about 200 clicks a day, however I'm not seeing any of these random sales anymore?? The only thing I have changed is that I've redirected to amazon through a PHP file, like mysite.com/out.php?id=34 etc... The clicks are still showing up in Amazon so it's got to still be working, but does covering up the URL like this stop Amazon setting a cookie or something? I'm really confused... After 1000 clicks I'd have expected at least 1 sale.... for something!