Just my thoughts
I've had a 15 inch Powerbook for just over 3 years, and have been looking to replace it with a lighter, more portable computer. This is the first Mac I have ever owned.
I use maybe 10% of the power of this machine, and suspect that is consistent with many other folks. Certainly, if it isn't consistent with other users, I think that Apple are targeting folks who aren't real "heavy" users. I like the cool AL body, I love the ease of use, and all I use is MS Office, IM, internet and a couple of other small apps.
I have ordered myself a MacBook Air because it it light. I travel and instead of my POS Dell that my company gives me, I take my Mac. OK, so in the far reaches of the world, I need the USB ethernet adaptor, but I really don't care about the extra 2 oz.
I think that the target market for this book are the people like myself. I don't profess to be a genius. I have limited needs, but I like something cool, and something light weight.
I also spoke with my boss. A die hard PC guy who has bought his daughter a MBP (last summer) for school. He has played with this, and prefers it to PC.
The strategy has been mentioned elsewhere. Get in the hands of those who can make corporate decisions, and the Mac will start to spread throughout the corporate networks. That is where Apple will see huge growth.
Sure, my preference was a real sleek 12 inch machine with CD / DVD drive. But, thinking about it, I am really happy. I have these dreams about watching DVDs on planes.. it doesn't happen.. I work. Downloading or ripping DVDs to the hard drive isn't a big deal. If I pay a couple of $ before I get on a plane, maybe I will actually watch the movie.
Anyways, in a nutshell... I don't believe it's perfect, but its a great thing at the moment. I have NEVER swapped a battery out so I don't care about that (Airline adaptors are the way to go, and in many cases, you don't even need an adaptor these days).... its a good thing.
Mac people have a higher than average population of people who are really in to high end powerful computing... this brings it to the more typical level, I believe, where all you use are internet, MS Office and little else.
I hope the MBA does well, I hope that Apple stock does well ( I don't own any), and I hope everyone can see some good in what is happening.... don't bring Apple products and the Mac community down with pathetic bitching and moaning.
Cheers (And roll on Feb 15th when I get my MBA delivered!!!)