This seems to make sense, except whenever i've seen analytics for time-on-site, it seems like the vast majority of people spend less than 30 seconds on pages. P

This seems to make sense, except whenever i've seen analytics for time-on-site, it seems like the vast majority of people spend less than 30 seconds on pages. People's attention spans aren't automatically better while using the web despite the lack of a physical fold, i'd guess that they're probably worse if anything. And anyway, isn't the person's monitor a physical fold? Like, you still want to attract their attention with content. Having good content in the first 1000 vertical pixels doesn't mean you can't have good content everywhere else. Very nice article though.