The issue with the paywall is that this is hard to have enough good bank card to be able to pay without such an ugly thing as payment processors. Also any bank cards I have experienced can not pay anything less than 1$ without absurdly high comissions. If the paywall costs you literally less than 0.01$ with all kinds of comissions and having no authorization which means that the government can neither read your webpage purchases nor block them - would you still call it a paywall?
I am sure that even sub 0.01$ payments will effectively filter 90% of the spammers.
I am sure that even sub 0.01$ payments will effectively filter 90% of the spammers.