An anonymous reader writes "Paypal has quietly killed the Paypal plugin and the related virtual-card service. The service generated on-the-fly, one-time-use credit card numbers. When I called in and inquired about the service, I was told that the service has been discontinued, but may be relaunching something similar depending on interest. They are treating inquiries as a sort of petition, taking down names and contact info. The forums seem to be a lost cause, as no Paypal reps have replied to the numerous posts regarding virtual cards being discontinued. Does anyone know of a good alternative source of one-time-use credit card numbers?"