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ozten
on June 25, 2014
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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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Showing a captcha each time, for a repetitive task would be a horrible UX decision.