once mobile hud-like interfaces are a reality and have become sufficiently invisible owing to daily use, i expect that this sort of shared stream of consciousness, in one form or another, will become part of the human condition, much as books and literature are considered fundamental elements of civilized culture. asking "what is the point of twitter" seems to me to be drastically beside the point. people are using it and some of them are using it unselfconsciously. i can say i never stopped to think much about what twitter "means" until the hype about it began to permeate popular culture in america to the point that it is being mentioned in advertisements for other, unrelated products. up until that point i simply viewed it as yet another network service.