The first part cam from an interview with the boy himself; it's been a couple of years since I read it and I don't recall where, but I think it might have been Newsweek. The second part is, I'll admit, my conjecture based on the first part. It's very clear however, that he wants to promote local transactions; the top of each ad reads:
"Avoid scams and fraud by dealing locally!"
Notice what this says, and doesn't say. For instance, it doesn't say "Cut down on scams and fraud by dealing locally." It says that if you only deal locally you will never be ripped off.
