Sitting here on this pleasant balcony, I can see an interesting-looking shop across the road - Barbara's Emporium.I have heard that a strange woman owns that shop - she makes the goods she has for sale - all sorts of things like books and china and rugs and hats and fabrics.... they are all hand made. And where do you think she gets the raw materials - clay, paper, thread, paint? Aha, I said she was a strange woman - she does not use any of these. No, she makes everything out of thin air! You cannot touch these artifacts, you cannot use them! They are VIRTUAL goods, which means that the strange old lady just made them for fun! Let's go and have a look...