Roaming is a key requirement for Wi-Fi to take off but this writer is clueless: She seems to think that Intel's Centrino marketing program has something to do with roaming when really it's just an advertising push. The focus of this story is on technical challenges to roaming but she's missing the main issue. The technical challenges are small compared to the need for service providers to make agreements with each other so that a subscription to one service lets users access virtually any available hot spot. With those deals in place, more customers are likely to sign up for susbscriptions.
She also includes some shameless promotion of a company that does business with her publisher. She cites Zinio as a "chief" player in marketing value-added Wi-Fi services. It looks to me like Zinio reformats magazines so that they look nice on handheld devices. What on earth does that have to do with roaming?? What a poor example of journalism.