It's actually interesting because Rob Kitchin has started almost exclusively using the word "capta" in his later works. I'm tempted to follow him in doing that in my personal writings. (Captcha and other forms of "data labor" [1] or even "data slavery" is also something that I've started exploring.)
I had no idea anyone was doing in-depth research into this kind of -- as he aptly calls it -- data labor. This would really merit its own HN submission. Thank you for showing me!
[1] https://uknowledge.uky.edu/geography_facpub/11/