From CEO of Chartbeat:
a stunning 55% spent fewer than 15 seconds actively on a page.]
Among articles we tracked with social activity, there were only one tweet and eight Facebook likes for every 100 visitors
On a typical article two-thirds of people exhibit more than 15 seconds of engagement, on native ad content that plummets to around one-third.
66% of attention on a normal media page is spent below the fold.