Good for quick hellos
We use Facebook for quick "hi, how's your day?" type conversations with our son. One interesting note: When our son was in high school and my wife "friend requested" him, we got a "no way Mom". However, once BCT was over and my wife friend requested him again, we got an acceptance and an "I miss you mom." For us, its an easy way to gauge his mood based on what he posts. We can also see that he is making friends at the Academy and that is ALL positive.