It requests users to pay for a product by a facebook post or a tweet and by doing so they are sharing the information about the product with all their acquaintances. And this way of making your product popular sometimes proves to be of a higher value as compared to the money you would get for it. Main Features: Efficient Way to advertise your Product Gain Immediate Visitors Effective Viral Marketing Tool For Personal Use/Or As Independent WebSite Powerful tool to market your website/Product Easy to implement Extensive documentation Works in all major browsers