I can usually guess when someone is too young by the way they type. Not always correct but generally they are the immature ones who "tipe lyke dis" and generally delibrately spell words incredibly and delibrately wrong. *****s use abbreviated words like "how r u" and "wht u been up 2" where as a minor usually types "wubu2"....they can be very tricking into making you think they are over 18 but the ones to watch out for are those who say they are different ages and appear to attention seek - thats their general pattern but not always right so don't take this as to follow as a precise! they're just signs to watch for!