[jacques_chester]

Yes, I include Flattr. They have in common with Kachingle (and, if you squint, Patreon) that you need to deliberately activate the payment.

I think that this still doesn't work because it still requires thinking. The whole magic of microsubscription is that no additional decision making is needed on the part of the subscriber. They pay once and thereafter consume without consideration or guilt.

Any act of making people think, no matter how small, is a barrier to entry. I think this is the fatal flaw in any classic micropayment or tipping scheme.