I call this the Conduit Method
Not only is it incredibly simple - it's also leveraged. In this case, the merchant isn't really one who's benefiting from your efforts. You're actually "using" their efforts, their ad spend, their other affiliates and so on to your advantage.
It's also incredibly effective.
For example, I have a site that's not even 90 days old (still a PR 0) and it's already earned $5,061.84 in commissions - all from free, easy traffic.
Let's get started...100% Guarantee you will get something out of this method or I will refund your money.