Communication is very important when you want to inform your kids about the dangers of the Internet. However, I decided to also install an application on their computer to block certain websites, Qustodio (http://www.qustodio.com/).
It's the parents duty to first teach children. Giving out information to strangers or even talking to strangers was first lesson. Look both ways before crossing. And it should continue in the classroom. If there 16 going into online chat rooms they should be ready from all the lessons up to that point. If there not take the Internet away.
Its easy to say parents need to be more involved. But its hard to do for those who are technically all thumbs.
To protect children a whole host of specially software will be needed. For example, protective software must detect a child typing in their address and blocking it except to approved destinations.
The bottom line is, children don't have the wisdom to be communicating with strangers. That needs to be blocked.
The best way is Parents needs to spend more time with their children and explain them many real situations of good and bad effects brought to many children using the cyber network. This may take a year or so but continually working on this will create a protection wall in the children's mind while using the internet.