Pretty sure that the main reason Flattr (whether 1.0 or 2.0) failed, was because it wasn't backed by the Silicon Valley ?

I think more due to subscription nature. You had to pay 10€ every month. With zaps I can send someone 1c or 1€ whenever I want.

	▲	BlueTemplar 3 days ago \| parent [-]
		But that's worse in terms of keeping your expenses in check...