From the paper "Since our crawler fills a distinct email address for each website, we are able to attribute the received emails to distinct websites. In the si

From the paper "Since our crawler fills a distinct email address for each website, we are able to attribute the received emails to distinct websites. In the six-week period following the crawls, we received 290 emails from 88 distinct sites on the email addresses used in the desktop crawls, despite not submitting any form. Most emails offer a discount, or just invite us back to their site. " Filling out a form, never submitting but still receiving emails is such a dark pattern