I think the real moral is don't post illegal/incriminating stuff on the internet.
not just illegal/criminal, you would be amazed at how much information you can get on someone from the internet and 60-75% is from social networking. I scared the sh*t out of my new wife one day about this. She didn't believe me, so we picked one of her friends that I had never met/known of. I presented to her and her friend (who just met me for this) 48 hours later what I had found. Police record, family history, credit rating, etc., etc. Her friend verified that the info I had developed from some social networking check was accurate. BE AFRAID, VERY AFRAID.