GP is talking about visitors doing free work for Google. Googel can use the results to train its algorithms - this is a big set of data and very valuable. Of c

GP is talking about visitors doing free work for Google. Googel can use the results to train its algorithms - this is a big set of data and very valuable. Of course the site (and with it visitors) benefit in this exchange, so I agree with you that it is not entirely "free".