SW can block persons you talked with in here,i'm not worried at all they are reading everyone's messages 馃槵 they give the impression that the person have blocked you when it fact its sw fault..
so I guess a 17years old isn't allowed to talk with an 18 years old then,how great,but I agree on a 40 to not be able to contact a 13 years old,still I dont think this system is very efficient