billing address, payment method, billing
We require our users to enter their billing address (like most retailers) in an effort to tighten our security measures, comply with certain states' sales tax requirements, and to better protect their accounts. We also hope to deter those who, unfortunately, attempt to compromise the integrity of our site.
You may enter your billing address on your Settings page. If you have any trouble at all, please contact us at firstname.lastname@example.org.