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A comment on Fake review factories that run on Facebook and post five-star Amazon reviews. Parent comment

Re:Fake review factories that run on Facebook and post five-... by antidesitter on Sunday October 21, 2018 @07:48PM (#18271062)
> Imagine how much less spam we would have if it cost 1 cent to send an email. Friction can do a lot of good.

Incidentally, this was the motivation behind a PoW system called Hashcash: https://en.wikipedia.org/wiki/Hashcash.

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Re:Fake review factories that run on Facebook and post five-... by user111233 on Sunday October 21, 2018 @11:36PM (#18272016)
Bitmessage had this and it would burn up my laptop cpu trying to send a text message but spammers with gpu farms could still take out the whole network with no troubles.
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Re:Fake review factories that run on Facebook and post five-... by cma on Monday October 22, 2018 @12:44AM (#18272229)
Seems like in a mature implementation your phone/laptop would route the message to a GPU farm and the work requirement could be scaled appropriately. And for whitelisted everyday contacts the computation cost could be zero.
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