Upselling is perhaps the greatest way to make more money and it is easiest to do with existing, established customers who know and trust you. Upselling is not about selling people things that they don’t need, it is about convincing customers that there is added value in a better product. Treat your loyal customers well by selling them your best products at your best prices.

Pay-per-click – Another effective way of attracting customers to your affiliate site is to advertise or pay for PPC. You don’t have to go far to look for this one, since Google’s own paid advertising can already do wonders on its own. Fees are only in cents per-click, but this adds up pretty quickly, so expect to shell out $50 or more for a low-budget campaign.
For example, if I talk about how cool a product is, and then you find out that I’m an affiliate for them, wouldn’t you as a conscientious observer become skeptical as to whether my information is biased, if perhaps I’m only saying how cool something is because I can get paid for it? Wouldn’t that make you question my integrity with other things I say as well?