I opened this thread only because I saw the title and Sampiro. Then I was disappointed.
Bless you! I’ve sung with homeless people and homeless people have come up to me while playing guitar and panhandling in Nashville to sing. It’s uplifting, aint’ it?
See, this is why I never drink: that way attractive southern gentlemen don’t feel guilty about taking advantage of me. 
Once, while humming in a metro station, I got tossed a penny, though I don’t know whether it was meant as sarcastic revenue, or as an unsarcastic projectile, or both.
Yeah, I have a few moments like that: for example, being cruised by a female prostitute while sashaying down the street in Church and Wellesley in Toronto, singing a show tune, by the Pet Shop Boys for good measure. “Honey, is this working for you?! We need to talk marketing!”
I do accept Pay Pal. 
Yeah, but that’s the kind of activity that is best done in person. Then I can just give you the money face-to-face.
Silly goose.
You need to travel America and write about it:
The Gay Trip or The Flamboyant Traveler ** Queer All Over** or some such witty title.
I would be first in line to buy the book.