There used to be hoardes of sites offering free downloads, quizzes, porn etc etc. You would have to solve a captcha to get through, but they were ‘stuck’ in an infinite loop. I always believed it was being used by spammers/hackers to bypass actual captcha elsewhere on the web. Its kinda genius, offloading the work to randoms looking for free stuff…
Make your face so hideous they will crop you out of pictures