Nor facebook nor twitter. Since the internet and technology exist people forgot that if we want kept our private life the better is again blogs and myspace not facebook and twitter. If you want to see your private life dissapear takes facebook and twitter. If you want kept your private life for you takes blogs and myspace. 🙂 With facebook and twitter you can't have a private life because in ten year all people will can say where you was, that you done with a dangerous precision of hour.