When you become an affiliate you are giving a referral link that when clicked takes a customer to the Mitragaia homepage. With the custom link generator you can pick a specific page from the Mitragaia website and add your referral link to that specific page. This can be useful if you want to promote a specific product and want your customers to go straight to that page. For example you want to promote the Green MD. You would enter the URL from the Green MD page into the generator and the code you get can be used to take your visitors straight to the Green MD. 

Being able to target specific ads to your customers gives you more freedom to focus on your audience and what they are interested in. Being able to target your audience is a great way to boost your revenue.