Hi Miles! Congrats on the launch(es). Super cool stuff, very excited for you!
I tried some of it out yesterday, despite (only) being in Canada.

• One friend seemed to not have a lightning address associated with their cash tag. Is he supposed to? Or does he have to sign up for something else?
• I saw in the videos that users have the option to pay from their USD balance. Is this only available when paying to Square merchants? Or to all merchants?
• And finally: When Canada!