American here. I had to say a mailbox was a parking meter yesterday to satisfy one of these terrible things. Your measurement of success may be biased by user acceptance of incorrect information in the process.

And as a non-American, I neither know nor care what American parking meters look like in the first place. They're training their model on my model of their model

This would be a reCAPTCHA: there were no parking meter questions running on hCaptcha yesterday, from a quick check.

alphamail. electronilist. bullhorn. campaignking. untitledlist1. goodmail. emailotron. quicklist. emailist. senditall. postbag. carrierwave. deliverist. droplist. notspam. relimail. emailblast. firstcontact.

This is awesome! Definitely shortlisting senditall.email and droplist.