I've bought just about every MacBook for my company, personally I now own a Mac Pro, a 15" MacBook Pro and my MBA.
The MBA is my favorite machine, close enough to netbook size for me, very light, takes little space in a bag PLUS is has an excellent keyboard and good sized (very clear) screen.
I like it because I can get my work done fast and efficiently just lounging around, leaning back in my office chair, the couch, outside wherever it's just fun to use, compared to formally sitting down at my desk or sliding my laptop table with my 15" MBP over to me .... by the time I get off my couch with my Air I realize there's no need to sit at a desk to work ... because I've already breezed through it on my air.
Apple sells about 20,000 MBA's a week, that was what I was told and that was right around the time of the price drop... we have a Business Account with Apple and personal rep and that's the info I was given, true or not true who knows .... if it is 20,000 a week that's respectable volume imo ....
People would realize "if" they tried it for themselves I think that for many tasks a bigger, faster computer, such as a MBP has more power than they need and they'll quickly learn after handing and using an MBA just how much fun it is to use .... one the other side Netbook owners if they tried an MBA would LOVE it ... you loose too much going for a netbook ... small screen, small keyboard, most are thick and quality is fair....
MBA hit's the sweet spot for a lot of people I think, the general consumer is for sure still "wowed" by it, just watch in an Apple Store or Best Buy with all the Apple notebooks on display most people go straight to the MBA just to have a look, even if they're in there buying a desktop people still often go look at the MBA, the Apple Staff will confirm that I'd think. People also have it in their mind, (windows mentality) that they need maximum processor speed, ram etc just to do average tasks so even with the price drop they still overlook the mba ...
The MBA "rocks"