The National Association of Broadcasters (NAB) have been running attractive but vague commercials about how "special interests" are trying to destroy free, local television. But it's completely empty of content. No no website is given for more details; the special interests are not named; no call to contact your political representative. It's simply a broad call to be afraid. What is this? What are they advertising for or against? What am I to do about these unnamed, shadowy forces that threaten my OTA HDTV?