As for kids and online , yeah , if you're not a parent just shut it until you are , yes you have an opinion , but your flesh and blood is more than just precious to you. They are absolutley everything in this world worth living for and give me joy just waking up knowing they're here with me. My sons' first online escapade was on MY wow account so my guildies could watch over him also when I'd have to take the occassional break. The very first HOUR ,"Hey , how old are you??? ARE YOU A GIRL??? A/S/L???" We shut the guy down but it still happened. My son handled himself fairly well at first , but the thing about predators is they spend alot of energy to become geniuses at getting what they want , and they have all the time in the world to harangue children if nobody is there to intercede.
He's now playing skyrim on his own and chats with his buddies over xbox live and I hear many discussions over some of the more questionable decisions in the game constantly , and he does this on his own now (he's 17) and all it took was some nudges here and there. Oh and example.