I think FB's usefulness breaks down as you get older. It's helpful to understand the average FB user. They're young. They're in high school and college. They pr

I think FB's usefulness breaks down as you get older. It's helpful to understand the average FB user. They're young. They're in high school and college. They probably dont have work friends, random old acquaintances, etc...no uniquely distinct groups of friends. They're less mature. It's typically only later in your twenties that your life starts fragmenting and these issues of "Do I really want to share this with everyone??" arise. That's when FB becomes dominated by generic crap and baby pictures and it goes from being a great tool to being nothing more than a time-waster. I bet for the younger crowd, FB works just fine for the most part.