My sister made it a requirement for letting her daughter go on facebook, that she be friends with her mom & dad. If she unfriended them, they'd just block the d

My sister made it a requirement for letting her daughter go on facebook, that she be friends with her mom & dad. If she unfriended them, they'd just block the domain (which would likely cause some howls of protests). Obviously non-computer-savvy parents would have more difficulty controlling their kids.