Administrative Note: Although you can change your payment account information (to include PayPal address) this is not intended to be used to pay another person (i.e. I owe Bob $100 so I will change "my" PayPal address to bob's PayPal address and then sell some coins). PayPal payments will be checked to ensure the name on the PayPal account matches the name on the FastCash4Bitcoin account. Using the FastCash4Bitcoin service to pay third parties is expressly prohibited by our terms of service.
This apparently means that the you are now requiring users to disclose their legal name to you. Unfortunately, I don't trust you with my legal name.
You're also implying here that PayPal is giving out their users' legal names to whoever asks (otherwise you wouldn't be able to know if the name on the FC4B account matches that on the PayPal account). Can anyone else confirm that PayPal gives out your legal name to whoever asks for it?
That is your choice and one we respect; you simply can't use the service.
Yes PayPal provides the name on account AFTER a payment is sent to that account. Obviously that is insufficient for our purposes so we use PayPal's "get_verified_status" API call which allows us to verify the name provided matches the name on an account BEFORE it is used.
https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_api_ACGetVerifiedStatusAPIPayPal doesn't provide us the name on the account however they allow us to verify the name provided matches their records.