Technically speaking, it's not actually the 28th of December in the Bay Area yet, but Sprint's already out in front with its announcement that WiMAX connectivity has been activated in and around the city of San Francisco. We were promised this development exactly three weeks ago, back when LA and Washington DC were first familiarizing themselves with the glorious new speed, and today the Bay Area -- also including San Jose, Palo Alto and Oakland -- becomes the 71st metropolitan market to be lit up with Sprint's finest wireless offering. Guess Verizon had better