First there was regular phone service. Then there was cellular phone service. The latest buzz has been about VOIP (voice over internet protocol). By routing phone calls through a broadband internet connection, there can be real cost savings. This has been gaining momentum, and starting to become prevalent with such bonuses as one monthly payment for unlimited phone calls including long distance. In short, this has been a revolution in telecommunications!
Never to rest on their laurels, the next act planned is for VOIP broadband phone calls across wireless internet connections. Now, anywhere there is an open wireless network, with a handheld wifi phone, you can sit all day and talk. I could see this type of device as really useful for folks that like to talk at Starbucks all day, and for travelers at airports and hotels where wifi networks are commonplace. Perhaps, for urban dwellers with city wide wifi networks (like those being assembled in San Francisco and Philadelphia), this may one day become the phone of choice for many users.