Having your own website is essential for gaining credibility. Consumers are more likely to purchase from someone who looks established verses an amateur. Just promoting an affiliate link gives the impression that you are only out to make money (amateur), where a website makes you look like you care about your business and your customers (professional). Think about it. Most people are scared of scams and rightly so. They are more careful about what they purchase and what opportunities they join. If you had a choice which one would you purchase from?

Having your own website gives you a way to tie all of your affiliate links together creating one place where all of your streams of income will come from. By promoting your website, you are promoting all of your affiliate programs at the same time. This saves you time, not to mention advertising costs. You will also be able to submit your site to the search engines. There are so many ways to bring traffic to your site that are not available if you just want to promote one link.