By Robert X. Cringely The world has gone crazy for wireless data. In the dismal days since the dot-com meltdown of 2001, almost the only happy business news has been in the wireless sector, whether it is WiFi, Bluetooth, SMS messaging, you name it. WiFi hotspots are everywhere, 3G mobile data is slowly coming, and next year, we'll see the first 802.16 WiMax products -- the first of these initiatives to cause real concern for the telephone companies. WiMax, which promises fixed wireless 70 megabit-per-second data service over a distance up to 50 kilometers, scares the phone companies because it...
