Email/Name basically through PayPal. That about it. The address info on the site is private and used for billing purposes. With NightDev turning into a legit business, some info is needed.
Basics would be username besides that. You might want to wait on a DEV to share their thoughts but as a user that sends/receive donations, All i ever see is the persons name/email via PayPal site which is a normal things for them.