In our networked world, reading is not just about taking in words but also about:

I believe the answer is: Giving them back.

With current development of technology and social media, we could read from various different sources and easily provided the new knowledge for other people with one single touch. 
One positive thing about this is that it make the flow of information become much more easier, but one negative thing about it is that it is really hard to separate which knowledge are true and which are not.