They ban facebook and bebo but allow other sites that are just as much a risk. They do not seem to appreciate that any site that has a personal messaging system is open to abuse.
I have a specific concern here in that my daughter was using an apparently harmless site. We discovered almost by chance that she was being asked to post pictures of herself on the net, to meet strangers and to look at some pretty unpleasant porn. Hard to tell if they were the actions of a teenage boy or a paedophile but it was exactly the "grooming" process that you are warned about!