LOL prevention is better than cure
Although BBJ you want to keep in mind that anybody can post anything so nothing no matter how good it is its not 100%. So for example anyone could post porn and call it High School musical, Yeah it will be taken down but that might be after your child has seen it.
Franks Adventure
this is an example of the online games available for kids, in franks adventure they can buy coke, visit the porn cinema and meet some seedy characters