By default, Ubercart displays an attribution message at the bottom of your web page. Settings in the "Display settings" tab, accessed from Store » Configuration » Store (/admin/store/settings/store), let you choose the message, or disable the message entirely.
You may also specify which address (shipping or billing) to use as the primary address for customers in reports and administration tasks. This is handy for sites that do not capture or use delivery addresses but do capture billing information. In the event that an order has neither address, the username will be used. You may also choose to display addresses in all caps on invoices - a common feature request.