I agree that traditional bullying can be a serious issue but believe me, cyber bullying is as dangerous if not more. My friend's daughter used to be online excessively and turns out that she was psychologically abused by a stranger and was in terrible shape for some time. Though she's healed now, both of us installed a parental control app to keep a tab on our children's online activities. Its a free program called Qustodio and does what it is required to do very well. Sites are automatically blocked and I am notified about who they chat with and what they install on the computer. Everyone must have such protection.