Emus being the size they are, I can't see any economically feasible way of raising them OTHER than "free range". Emus are the latest thing in ranching, hadn't you 'herd'(hehe)? Seriously, there is even a professional magazine out for those who raise emu, ostrich, and other exotics. They are sold as gormet meat with the additional income from the leather (after all, who ever heard of CHICKEN leather?) and the feathers.