It used to be that when talking on the phone, you'd pull the cord as long as it would go and lock yourself in the toilet or a closet so nobody could hear what you were saying. Now, even at a wedding or other group event, more than half the people sitting at the table are talking or texting into their private cellphones ignoring everyone around.
Sorry, but I'm not blaming facebook for our lack of privacy.
I'm not hiding who I am nor where I am. I'm a very active blogger and joined facebook to promote my blogs. For me, facebook is a cross between blogging and email. It's not my homepage either.
Like most people in the modern world, I'm easy to trace. Most land phones are listed in the phonebook, and most phonebooks are available on the internet. That's life today.