Quoted from goatdan:
The other trend that has really surprised me is the whole trading pins thing. I personally don't get what is up with that, but then again, I'm a guy who tends to get games that I know I am not going to get sick of, so trading a title I know I want to get something else I know I want just sounds like I'll have to work again to get back what I wanted originally.
Trading is a good way to capture value when you see it.
I was saving money to buy a machine, I didn't have one in mind, so then I meet someone has got a very nice deal on a machine I'm not familair with. I buy it, and then decide whether I want to keep it or not. It should hold it's value, especially if you get it for a good price, so I might as well have "something" right now then wait for something down the road.
At first I was unsure about trading games and it seemed a little weird, then I basically reach my limit of games, and now I've got to do something.