I knew someone a while ago who started chatting with someone on one of those chat sites and when he asked how old she was, "she" told him "she" was 13. A normal man would have ended it there, but he decided to continue the conversation and even started talking sexually to "her." Well, it turns out the 13 year old girl was an FBI agent posing as a little girl and that ended not so well for the guy. I think he finally got out of prison after 10 or so years, but he is now registered as a sex offender for life and even has to post a sign in his yard for everyone to see.
Not sure why I went off on this...lol!