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I guess the issue is, does Google know when someone recycles a captcha, and if they do, are they doing anything about it? It's useless if the captcha isn't flagged and is just given to another use.


The tricky thing is that there are hordes of automated captcha-breakers that will recycle captchas until they get something that's easy to OCR


This is Google, so I'd imagine they keep tallies.




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