Internet safety

As a mother and grandmother I want to say the Internet and kids seems a scary mix.
How would they really know who they are communicating with and giving information to when on Internet sites. Anyone can pretend or reinvent themselves on the Internet and it seems that predators always are one of the first to figure out how to misuse or use to there benefit new technologies. I want to keep kids safe. Having said that though the Internet itself is a wonderful tool for learning, sharing, playing and communicating. As always as in all aspects of their lives it is up to the parents and adults in their lives to teach them "safety first". As with their first step, crossing the street, riding a bike and the first day of school we need to show, caution, teach and then free them to do, all the time being there to keep them safe.
The Internet could be a grand adventure and a wonderful place to visit with just a small measure of supervision thrown in.