My iPhone Experiment
Traveling with a selected few apps and only relying on WiFi has worked much better than I could have anticipated. I never really had a need for my Air as I only had people meetings.
The Google Docs (Doc2), foursquare, Facebook and Skype apps worked brilliantly. Less in genious.
The access of high-speed free WiFi was surprisingly generous at my hotel, meeting venues, restaurants and friends places. Even on the airport bus. Probably devoided AT&T of at least $200 in fees.
It was also nice to not being able to check emails and status updates numerous times a day. That said, I would be open to an affordable global data-only plan.
