We made it to 38 at the moment...
http://www.the370z.com/nissan-370z-g...join-club.html
I think there are a couple of reasons you see more on here at the moment.
1. In the seasonal states, it was the only 2010 available.
2. If you buy one, chances are you are an enthusiast and therefore more likely to be on a forum like this.
3. If you don't buy one now that they are available, you will never be able to do so again.
All items that will lead to a spike in these sales....
Edit: Aaron beat me to most points...