The section about Diablo 3 reminds me of the article that was posted here some time ago actually, about a guy who made a very,very decent living off the auction house. He basically waited for people to post legendaries for sale in the gold auction house, when they clearly wanted to sell them on the dollar auction house - so items going for 5 gold instead of 5 dollars(5 gold is absolutely nothing in diablo), and he would re sell them for actual dollars. He was making like $200 a day, which in his country(Romania? Slovenia?) was huge.