Humanity has gone a long way from the first photograph was made in 1826 or from the first photo posted on the web. 1000 memories blog has calculated that 3.5 Trillion photos have been created by the humanity since 19th century.
Vsauce has tracked down the road from the first photo to what we see it is happening today in the Facebook world: 2% of all photos that exist in the world today are uploaded to this social network. I don’t upload many photos to Facebook. Better have them in my PC!