Are town halls “worth the paper they are printed on?”

Town halls are a primary official form of corporate verbal communication. But are they worth the effort to organize, much less the total hours of attendance that they mandate from those in attendance?
Four dimensions of internal influence: ambassadors, influencers, advocates and followers

When it comes to organizations and their social dynamics, I tend to think there are four main kinds of people, each of which has distinct roles and needs to be addressed in distinct, yet integrated ways.