rate. This is especially true if you have a lot of visitors that trust the content you deliver. What you are doing is endorsing the product of someone else. You are warming up the customer to the product that you are promoting. Most affiliate product owners are very professional and write amazing sales letters, but it is sometimes a short endorsement or review by the referrer that seals the deal and makes the seller and promoter a lot of money.
There is a psychological aspect to back up pre-selling. By pre-selling a product and then referring the customer you are creating a subconscious message in their brain that this particular product is so great that you are willing to refer a customer away from your own site. This is of course not true, you are simply referring the customer to one of your “sales branches”. But it is the perception that you