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It's a monetary cost. Phone numbers will cost about 0.10 per SMS verification but you can do CAPTCHAs for about 1000 for $1. I think a better solution would be
by donkarma 4y ago
It's a monetary cost. Phone numbers will cost about 0.10 per SMS verification but you can do CAPTCHAs for about 1000 for $1. I think a better solution would be microtransactions of some kind, although imposing any monetary cost will deter spammers. It just depends on how much they get out of it.