The promise of Wi-Max is nothing less than high-speed wireless internet practically anywhere you go. Of course, the reality falls short, as it often does, but it still shows itself a worthy successor to normal 3G and wi-fi. This industrious tester zoomed around Baltimore and tested it out in different areas (70% of the city is covered at the moment), finding that speeds were generally on the order of 3-4Mbps, or about 400KB/s. That’s plenty for me, personally, which is good because technical max of 20Mbps probably isn’t going to happen unless you’re perched on the WiMax tower.
Right now you can really only hit up the WiMax in Baltimore, but Sprint is working on dropping another $5bn into the rollout of a nation-wide network. Deep pockets! Maybe Sprint can help with the national debt.