أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
A billboard is a thing you see - you can't avoid seeing - when you are going from one place to another. Since humans are very unlikely to stop going from one place to another, I suspect that billboards - in some, futuristic form - will continue to exist long after social media marketing is dead and buried.
