We've written several times recently about Facebook's role in e-commerce . WebProNews spoke with Christian Taylor CEO of Payvment , which has been offering a Facebook storefront application to retailers since the beginning of November, and is now giving them a way to get people more interested in buying from them. It's simple really - if a Facebook user comes across one of the retailers utilizing Payvment, they will be able to get discounts on merchandise for becoming a fan.