But isn't this really time consuming (it requires going through their catalogue to find the product? Also, how would you know what sells well. I guess the advantage of this is that you can match the product with the theme of the web page, a bit like Adsense.
Amazon web services and creating an aws store are the only type of links that have ever sold anything for me.
Direct text links - this the only good way my dear friend.. This is the way one should help each other this is why this DP has been created.