Twitter = a vainglorious device to let the world know stupid * about yourself that used to be limited to your closest friends who even then, couldn't care less what you just did or how you feel about sliced bread. When it first came out, I signed up just to see what it was all about. When 3 besotted people signed up to follow me, I knew that Twitter was a bad idea whose time had come. But today's kids are conditioned to think the new technologies are the cat's meow, posting Youtubes of themselves assaulting other kids etc,. and AO, if he doesn't get that his tweets will soon be well known in the circles he shouldn't want to ever know about them - but maybe does - is just another good example of the same (lack of?) common sense.
But hey, I read this board, so, who am I to judge other people's common sense.