if you want to use Post Affiliate Pro and integrate it with some 3rd party software like clickbank, you can do it this way:
> What is the correct way of promoting affiliate links if not through adwords?
that is on the affiliate. He can use own website, email marketing, coupon codes, etc..
I am not sure, what exactly are you trying to achieve. Feel free to explain your plans and goals via email > email@example.com. We will get back to you asap.