Socializing however is all about varying levels of privacy.
I won't tell my coworkers or boss the same things I tell my friends, I won't tell my friends what I tell my close friends, and my family sits on the highest tier.
Maybe facebook will get this maybe it won't, or in general maybe it is impossible on the web where information tends to be so open.
Nobody at Facebook told you that Facebook was the best way to discuss the most personal aspects of your life with the people who are closest to you--though it includes private messaging, which may be good enough if you can't see them in person.
If you want privacy, don't share private information on Facebook. If you want to remain ignorant of your favorite sports team's latest scores or the most disgusting new genre of porn or how some movie you haven't seen yet ends, don't look them up on Google. The "next big thing" that Facebook is going to miss is not something people can already get by simply restricting their usage of Facebook, it'll be on a different axis entirely.
I won't tell my coworkers or boss the same things I tell my friends, I won't tell my friends what I tell my close friends, and my family sits on the highest tier.
Maybe facebook will get this maybe it won't, or in general maybe it is impossible on the web where information tends to be so open.