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They then removed the CAPTCHA, and it boosted the conversion rate up to 64%. In conversion rate lingo, that’s an uplift of 33.3%!

Pretty sure that 33% was bots, lol.

And they do train the bots to avoid negative-fields and timestamp analysis - all they have to do is look for type=hidden or display:none/visibility:hidden on the CSS

I use simple math instead of word captchas, seems easier on people.



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