I´m reading a book at the moment which say`s that we influence others through our social networks... that our actions can change the behaviors, the beliefs, and even the basic health of people we`ve never met...
There`s going to be a mother who won`t have to face the death of her child due to a disease just because of these few words... 
Isn`t that a great reason to share this effort on our social networks?! 
:)