How New York Times uses Social Media for "deeper" Engagement

An interesting read.
The article describes 7 ways on how the New York Times is using social media for 'deeper' engagement ?
But i am just wondering why dint they mention linkedIn and even youtube ?
Lemme know your thoughts.
The article describes 7 ways on how the New York Times is using social media for 'deeper' engagement ?
But i am just wondering why dint they mention linkedIn and even youtube ?
Lemme know your thoughts.
