Virtual items can make real value for Human beings.
Every day in the Internet market like Ebay, there are all kinds of virtual trade much as virtual equipments, gold, decoration , etc. People entertain and satisfy themselves through purchasing items. And the satisfaction need people to spend much time in virtual world to achieve. For example, one can use a 20 level character to fight. It will bring 20 satisfaction per hour. But the 20 level character with a sword will bring 50 per hours. Then, people will spend and get the 30 extra.
I'm a greedy player. Many years ago, I purchased wow gold. My friends laughed at me and said that it is a waste of money. I tried to explain to them. 10 dollars buy wow gold can get satisfaction for 20 hours. If I go to cinema, it will get satisfaction for 2 hours. If they can get the same satisfaction, I prefer to buy cheap wow gold. In fact ,I think I did a good job for 10 dollars.
Therefore, we believe that people are desired for the special life style, and it's the same in the virtual world. Decoration is a kind of virtual items, although most of the decoration companier go on by advertisement. It can be seen that the decoration will make the progress of tiny economy in near future.