That's very vague. Children may not be able to reason, that is true; however, I was taught to never talk to strangers, never leave with strangers, never take my favorite pokemon card from a stranger, never do anything I don't want to explain to the paramedics, never say something I wouldn't want to say to someone's face, never say naughty things. You get the idea. I never really went through a "swearing phase" either. Occasionally, I do swear, but I don't (and never did) drop f bombs every ten minutes like lots of people have. I never swore on Facebook because I wouldn't want people to read that. I never wrote a private conversation on someone's wall(public message board), through a message(email), or through an instant message- always did things like that in person. You will never see me do things like that, I mean- I might swear occasionally nowadays, but that's as bad ass as I get ;p (and it's usually for comic effect anyways).

To cover what I said: 1) I have remained in control of my "virtual" life my entire life. 2) I have never made a mistake of telling someone I don't know anything important about me 3) I believe if I can do it, others can too.