The spoken word creates the tribe; printed word creates the individual; and the electronic word creates the etribe.
So when the electronic word like Facebook and twiter are introduced to tribal societies, we have etribalism reinforcing tribalism, and the tribal society is whipped into a frenzy as in Libya at the moment.
But when the electronic word is introduced to a literate society of individuals, it does far less damage.
For literacy is not only the antidote to tribalism, literacy is also the antidote to etribalism.
But tribal societies have no antidote for etribalism, and so etribalism whips tribal societies into the perfect storm, such as we are sseing on our televisions today.