We’ve all clicked on an enticing link only to find that it leads to a 100-page slide show. So we half-heartedly click through a couple of slides before closing the tab in frustration.
But the publisher doesn’t mind. It got your pageview. An ad impression is delivered for every page that a person clicks on. And since most publishers sell on a CPM basis slideshows have become a go-to shortcut for inflating their pageview numbers.