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Thanks for the pretty clear clarification.
So from what I understand crowdsourcing (for a product) and bounties (again these would be considered products) are off the table.
What if one is developing an open source "product" as I suppose we would call this as well, a project, and asking for donations related to ones development of this project ("hey I'm the developer behind this github repo, if you'd like to support my work you can donate at ..."), is that allowed?
They do get something in return, but it's free for everyone, so the donation is just a donation - it doesn't alter ones ability to receive anything.