I'd never know about Twitter before Dr. Armstrong told us.
I think Twitter is similar to mixi. I am mixi user but I never wrote my journal or post my picture.That's because I am lazy and I also don't want to do it. I don't know even how to post. I think I don't need everyone to know about my private life. On the other hand, I want to know my friends life. This is the reason why I continue mixi.
I think these Internet services like Twitter and mixi is really useful to communicate with people.
However, it is sometimes become a weapon to heart people, I think. Is this the reason why Dr.Armstrong never participate Twitter?
