> and you need to post 10 messages a day Showing a captcha each time, for a repe... | Hacker News

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ozten on June 25, 2014 | parent | context | favorite | on: Show HN: Replace CAPTCHA with Proof-of-Work

> and you need to post 10 messages a day

Showing a captcha each time, for a repetitive task would be a horrible UX decision.

hippich on June 26, 2014 [–]

I guess this would depend on how bad situation with spam is on specific site. Just like showing CAPTCHA only once you could do showing hashcash widget only once...

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