[joevandyk]

most online purchases ask for the person's email address.

Also, you've never shopped at Amazon? They ask for the phone number for the billing address. https://www.monosnap.com/image/4QZmCDNdlsqei8BLIsjw6Z3q00tml...

[pbreit]

I was referring to when merchants ask for the name on your credit card. I can't recall that ever being accompanied by email or phone. Here's Amazon's form: http://imgur.com/Azd1VKZ