Pageviews which are counted and monetized by Google's other services. There was another HN submission recently (https://hackertimes.com/item?id=5476812) that had a great quote:
"I find that Google and SEO and tracking have soiled the web in unbelievable ways. Google has imposed a constraint on content through its ad business that I can't get away from, because content is trying to adapt to Google so it can be found, but especially because content becomes monetized in doing so-- to the detriment of us all."
"I find that Google and SEO and tracking have soiled the web in unbelievable ways. Google has imposed a constraint on content through its ad business that I can't get away from, because content is trying to adapt to Google so it can be found, but especially because content becomes monetized in doing so-- to the detriment of us all."