Sometimes service providers on the internet try to accomodate "anonymous" payment via wire transfer, etc. instead of only accepting credit card payment. VPNs are one example. Whether this is truly "anonymous" is debatable. The question is whether the service provider retains payment information after payment is made and if so, why. To provide service, arguably the provider only needs to know "this IP address is paid up through [date]". It does not need to know IP address 1.2.3.4 is John Smith's IP address. It does not need to collect or retain any information about John Smith.