And Voice? (Score 4, Insightful)

First of all this article assumes Voice over ip will be perfect(HA!). Also, have you ever tried to download while warchalking? Its near impossible to roam from network to network (any 802.11 protocol) and still retain connections over TCP/IP. All the equipment handles roaming differently. Why? Take a look at the standard, there is hardly anything there to talk about Roaming. So all the hardware manufacturers have taken it upon themselves to devise their own way to implement roaming and in the process made sure that complete seemless roaming was impossible under the current scheme.
802.11 and the others like 802.11b were built to supplant wires, not to allow full movement like the mobile phone networks.