ShopTab creates a URL for your store when the application is added to your Facebook Fan page. This URL may be used for promotion within Facebook or in other online or offline marketing activities.
We provide a shortened link so that you can use it in limited character environments like Twitter and so that you don't have to show that the shop is inside of the Facebook domain.
In some instances users report that their store URL has changed. This will only happen if you disconnect your app from a fan page and either reattach it or attach it to another fan page. We create a new link in this instance since we don't want to send the buyers to an abandoned site.