Oh yeah. With your grandparents, mom, friends, etc. watching. You barely post anything.
I think the biggest place where facebook fails, is making it easier to segment people and create groups.
Where you can easily setup a group, of say friends, and you can more openly post. Without telling grandma about how you dropped LCD at the concert two days ago and had a wild time.
You _can_ do this now, but it's clunky and painful.