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What is the purpose of pay-to-post? To improve trust. To reduce spam. To show appreciation for 'good posts' and thoughtful contributions to Stacker News... so that Stacker News is better.
That goes beyond currency.
The same with email - when someone creates an email client (it may even exist already) whereby to email someone you have to zap them 10 sats... it will reduce spam overall. But it's not about the payment it's about building trust and consequences for cooperation.
THAT'S Bitcoin's killer use case - trust maximization, the elimination of intermediaries, and peer to peer payments that improve trust under a transparent monetary network. I think that goes way beyond currency.
What is the purpose of pay-to-post? To improve trust. To reduce spam.
I don't know about trust. I see its key purpose as attaching (a more significant) cost to posting. Which will reduce spam that cannot extract more than it has to pay.
So it's less about trust and more about making low-returning spam a negative investment. It's about incentives, not trust.
Trust may or may not be a downstream effect from that. I haven't thought deeply enough about whether or not I trust posters here more than other places because of pay-to-post. I feel I see less noise and more signal here. But SN certainly isn't devoid of noise.
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