I can’t really feel appeal point of Twitter, though I have used for several month.
As far as I watch, it seems exciting for famous person in “real” society or for person who have much spare time.
One of the ways of exciting it is to exchange present information or opinion among the friends who have gotten along with originally.
But to enjoy this way, it seems apparently to waste time because it’s happier to do so via face to face communication or e-mail.