Definition: A tribe, viewed historically or developmentally, consists of a social group existing before the development of, or outside of, states. (Source: Wikipedia)
Marketing To Tribes - We are all trying it.
At the center of most tribes is a passion for a shared experience. This is no different from Social Networking. Marketers will continue to try to market within Social Media and some will fail, some will learn and some will find the right tribe. When a Brand finds the right Tribe they will win the popularity contest we call "Tribal-Share".