BII REPORT: Why The "Second Screen" Industry Is Set To Explode - Business Insider: Along with Watching television todays users also work on Tablets and smartphone, and might open Kindle to read the latest best seller
while also using a smartphone or tablet is one of the most popular leisure activities of the mobile era.
The mobile industry is working hard to create mobile apps and sites that relate to what's on TV, in order to capitalize on this behavior.
This approach is often referred to as the "second screen," the idea being that the tablet or smartphone becomes a TV companion device, allowing for added levels of interactivity— whether on social networks or dedicated second screen apps and sites that complement on-air content.
According to Businessinsider the 2nd Screen Usage is growing rapidly: 85% of smartphone users reported second screen-linked behavior at least once a month, over 60% reported doing it on a weekly basis, and 39% did so daily