Built in affiliate system helps to make your product viral. All members become affiliates as soon as they add their Paypal email into their profile. The admin area allows you to set the percentage of each sale that affiliates will receive. All payments are logged in the database as well as a text file. Double logging all payments means added protection against lost payments or payment disputes. Option to limit membership. If you set a membership limit you can customize a page to be shown when membership limit is reached. The script keeps count of your members and will automatically switch pages once the membership limit is reached. Option to raise price after each sale. You set an amount you want the price to go up and it will automatically be updated after every sale. And much More!