Is free reCaptcha?
Is free reCaptcha? https://www.google.com/recaptcha Or should I pay for it? And if you have to pay, the fee is charged for reCaptcha or only if the user has got the right reCaptcha?
Of course it's free. This service has digitized books and detected fragments of images from Google Street View; these are usually fragments of buildings. At this point, there is no public function of Recaptcha. Now the user is offered to just put a tie in the checkbox, after a chequebox application, the user may be asked to choose all the paintings, for example, to select all the cakes.