I dont like the 499 price tag for the 16gb wireless one, but I like the idea.
If it was 300-350, I would purchase one now.
This would be perfect to have on the coffee table, check your email when your watching tv, or surf a few sites. Being able to turn instantly on and be in safari would be nice. The standby battery life of 1 month is impressive, prolly with limited use you would only have to charge it once every week or two.
To compete with the netbooks, it needs to be 350 I think. I think Apple will drop the price come x-mas time though. They wanna get those early adopters and go from there.
Seeing where the hacking community and Apple will go with the development will also determine how successful it will be.