Many websites like Allthingsd.com have reported that Facebook is testing a new mobile payment service. However, our market sources, reveal that this is far from the truth. Facebook is only testing a service, which would pre-fill your credit card and billing information to make it easier for you to pay through any payment processor (such as PayPal). If things work out as planned, you could have a button, which says, "Please fill in my payment information". Once, you click yes, then the app could possibly fill in your information, and you could then proceed to pay by hitting the 'Confirm Purchase' option.