Macbook Air Will Fail…at Least v1.0 Will
So I think the MacBook Air will be a flop. It is the same size (screen-wise) as a MacBook, has less horsepower (slower CPU, slower and smaller hard drives, etc), fewer connectivity options, and it costs more. And for what? Just to be thinner and have the latest, coolest looking one? It’s a CEO, show-off send email, process docs, etc, laptop that’ll turn some heads next time he’s in the First Class cabin of his LA to NYC flight, not a mobile knowledge worker productivity workhorse. I guess students will like it too for coolness as well to write their papers on.
I guess if you don’t mind trying to get important stuff done at a slower speed, but at least you’re looking sexy doing it, and don’t mind paying more money for it then it’s for you!
I think eventually this will replace the MacBook and then it won’t matter: if you need a notebook that cranks speed-wise then you’ll get a MacBook Pro.
I’m all for ditching the optical drive though, not needed 99% of the time. I think we’ll see a thinner MacBook Pro sometime this year as well.
P.S. Don’t laugh at me or call me a hypocrite if you see me strutting around with one of these at some point. 
Here’s a comparison of similar small notebooks from other vendors, compared to the MacBook Air
