Dogecoin and Dogepal, which is an e-mail to e-mail crypto payment system using dogecoin has introduced anonymous tipping. Dogepal is sort of like a crypto version of Paypal, although not nearly on that scale. All you need is an e-mail address to receive DOGE payments and you need one to sign up for the service. Lost passwords can be recovered but account funds cannot so you will need to store your private key somewhere for safety. Over time Dogepal will be cross-platform compatible and try to incorporate other payment systems to work with it.