Twitter allows us to do what we always have on a larger stage.
Direct interaction is unpredictable. One of the joys and tribulations of conversation is the pressure of real-time give and take.
Instead of forcing us to be our warts-and-all selves it allows us, at least in theory, to control the face we show the world.
Twitter marks an advance in freedom. How we use it is up to us. The Twitter backlash may be necessary, but it is also doomed. For the fault lies not in our Tweets but in ourselves.