I'm not sure if they still do this, but I dropped Google Checkout several years ago because they allowed the user to hide contact information from the vendor. T

I'm not sure if they still do this, but I dropped Google Checkout several years ago because they allowed the user to hide contact information from the vendor. This may sound like a great privacy feature for the customer, but it really made it a nightmare to support customers who I couldn't confirm were actually my customers - especially if I needed to re-issue license keys.