And since we released it about three or four years ago, a lot of websites have started switching from the old CAPTCHA, where people wasted their time, to the new CAPTCHA where people are helping to digitize books.
tantissimi siti hanno cominciato a passare dal vecchio CAPTCHA dove la gente buttava via il tempo al nuovo CAPTCHA dove la gente aiuta a digitalizzare libri. Per esempio, Ticketmaster.