How to get a higher unique ratio
In many exchanges this tip will work. It’s fairly simple, but it might take some more work.
First you’ll want to make sure your website is added only once in the database. Many exchanges rotate sites independently so having it entered multiple times will make it chosen multiple times per user.
Next you’ll want to assign a smaller amount of credits depending on the exchange. Some exchanges will deliver traffic so fast, but it’s because they allow the same user to view the site over and over again.
Other exchanges, like StartXchange, have a method of preventing the user from viewing your site too many times. However having less credits assigned lessens the chance of someone viewing it multiple times.