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RE: AI Can Sniff Out Robocallers - IEEE Spectrum
To fight against SPAM, our Steemit platform can implement CAPTCHA or some other challenge–response test every time a user is publishing a new post or comment.
True, but people can always post to the blockchain by other mechanisms than the Steemit web site. I don't think there's a way to require a captcha from all possible posting sources.
But now I'm wondering about some sort of captcha-based verification service. Maye a service could be set up where people could voluntarily complete a captcha periodically and then curators could use that information to guide their voting. Here's something of the kind for Ethereum.
To be honest though, as a user I'm not a big fan of captcha, so I'm not sure if I would participate in something like that or not.