One thing that Flattr and many others like them got wrong, in my view, was collecting too little and levying too little from it. Too many schemes were $5/month

One thing that Flattr and many others like them got wrong, in my view, was collecting too little and levying too little from it. Too many schemes were $5/month or $3/month, then collecting 10% or thereabouts. You cannot build a sustainable business with high risk exposure for less than a fraction of cup of coffee per customer per month. But people kept bloody trying.