Now that the FCC has announced it will be auctioning off the 700 megahertz part of the wireless spectrum -- it will go unused once broadcast TV stations make a complete switch to digital in 2009 -- its use has become a political and commercial hot button. Internet activists have gone on the offensive to try to convince the FCC of the public importance of the newly-freed spectrum, and to be fair when assigning it, and today they've made a key ally in John Edwards.