It's someone exercising their right to put up a box on their own property. I see them all the time and it never occurred to me that this was "organized" by grifters in any way (and no, I don't have one).

Yes, I said "grifters." No one needs sponsorship for their LFL. No one needs to be "registered." If you want to contribute to society's literacy, there are lots of organizations that do that.

And by the way, public libraries are already free, and they're pretty popular, too.