All WordPress blogs have a feature(tables) where you can advertise products…only those you have chosen—Amazon—included(ej. nutrition,weigh loss).
The only way you can keep the customer in your site…is when you purchase the products and you manage the sales and delivering proccess of the products…in that case you
need to implement an e-commerce shoping cart with your own merchant account or even Pay-Pal in your wordpress blog…and you can even have the capability to build a membership management system in your own blog.
Sometimes companies have you sign a “drop off” agreement where you can send the sale their way…they do all the work and you get the commission…in that case they have you send them your tax id number w9.
That’s what I know about this question…maybe here is someone more knowledgable that can jump in and iluminate us all.
Hispanic living in Oregon,USA