VendorShop on Facebook

hmm this is a new facebook application i have never seen before. It says that it acts like a payment proccessing system but don't know how it exactly work.

Hi there, I just came across your question .... I work for VendorShop. We power thousands of facebook stores and also provide some great tools help you be successful with your store such as 'like' pricing, incentives to encourage people to share to their wall and much more. The application is free - the only costs are the Paypal fees to process payments. If you have any questions there is a support link on the facebook page at www.facebook.com/vendorshop.