one of the famous affiliate programs, and many people follow, clickbank.com.
here you can do with the product sales division of up to 40%.
a very interesting you do not need any capital, but you have the choice of many products to be in Jula via your blog or website. to the same amazone.com populeranya for business systems exactly like amazone. so if you combine it amazone and Clickbank is a great combination. :P