The Carly Ryan foundation was started by Carly's mother after the 15 year old South Australian girl was killed by someone she met online. She thought she had met an 18 year old musician from Melbourne when in fact she was chatting to a 50 year old predator and paedophile. The foundation has information on how to stay safe online - you can find it here. According to the website, the first rule of online safety is to remain as anonymous as possible. You wouldn't give out your information to random strangers on the street and you shouldn't do it online either.