Thats interesting, you have to be 14 to be on Facebook so you didn't find him there, or did you? I would be more worried about the details he was putting out about himself than his manners. I hope you told his mother that you found him on social media.
Did he have information about what days his mother was home?
I find it all a bit scary that so much information could be put out by a 13 year old.

BTW why so much angst towards the wealthy?