It is, however, true that Facebook is unlike Google in that, while nearly everyone wants to find information, not everyone wants to share information with other people.
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.
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.
this isn't to say that i don't ever want to say something to my friends but not family, or vice-versa. more often my issues with the "audience" for my facebook posts have to do with various groups interest in the subject of the post - people i went to high school with mostly don't care about python, or some great restaurant out here across the country.
No is not. Privacy is about managing social networking, the ability to connect to those I want as I want,not someone else telling me how should I do that.
As you get more social, you get more people telling you private things.