The Merch Store app lets you easily post your products onto Facebook to share them with your friends. In addition, you can easily spotlight other designers and showcase products from other Zazzle artists. Your friends can show their support by adding the app and showing your products on their profile. Whenever your products are purchased, you receive the normal royalty. In addition, you can enter your Zazzle username and password on the setting page in the app and receive a referral payment on any sales you generate if you are a part of the Zazzle Associates Program.