"Peace on Facebook", a section which show how many friendships are occurring across lines of conflict, offers a glimpse on what the social networking site could provide towards world peace. http://ow.ly/EjfW
It feels silly to use "Facebook" and "World Peace" in the same sentence. Nonetheless, Facebook has become one of the planet's biggest "countries", and it is essentially transnational in nature. If world peace requires (in part) communications and mutual understanding, shouldn't Facebook have an important role to play?
People don't usually want to fight anyway, and this is especially true of the supposed enemy includes several of your friends. So yes, more Facebook means less faceless war and violence.