Constant internet connectivity is as big a reason to get a laptop for me as form factor. Combing from someone whose last two laptop purchases were 17 inch screens, this might not mean much.
I'd buy a second laptop as light and easy to take along as the Macbook Air is. With WLAN HotSpots popping up everywhere I roam, I don't mind the missing wireless connectivity too much.
It's just the availabe combo of slow harddrives that is killing the device for me :'( According to ArsTechnica's "No Spin" review, not even the SSD option saves you from frequent idling.
link to the review: http://arstechnica.com/reviews/hardware/macbook-air-ssd-revi...