Besides the suggestions listed...

If you don't want to completely ban mature and open discussion of sexually-related topics, set up a 'sexual health' board or something. Then all the 'cannot get any' 13 year olds can actually go troll there, and we can impose stricter rules on Girls' Club posts. Of course, that board would probably need to be moderated even more heavily then GC considering the mental state of most Malaysian teenage guys... :S

This one sounds very suspicious to me. Especially the 'including hp number' part!