Facebook’s Growth Slows Slightly, but Mobile Shift Intensifies - NYTimes.com

Upwardly mobile

"The world’s largest social network reported on Wednesday that almost three-quarters of its advertising revenue and most of its 1.44 billion users came from cellphones and other mobile devices in the first quarter of the year.

And Facebook is beginning to make a similar transition from text to video, with its users already watching four billion videos a day, an average of four per person (although the view may be more like a glance, since Facebook considers three seconds long enough to count)."

Facebook’s Growth Slows Slightly, but Mobile Shift Intensifies - NYTimes.com