It depends on how "page views" is defined, but I can imagine a case where the same number of pages were viewed, but the interactions on that page increased as p

It depends on how "page views" is defined, but I can imagine a case where the same number of pages were viewed, but the interactions on that page increased as people began commenting more on reddit than on digg. Reddit doesn't refresh pages when you comment, so if they didn't count the xhr requests as "page views", you could have more active, engaged users without significantly increasing the actual number of pages viewed.