If you happen to sound like you're older than 54, don't even bother calling in to any of the talk shows on Chicago's WLS-AM radio station. Michael Packer, operations manager of the ABC-owned news/talk station, sent a confidential memo to staffers ordering them to screen out "any old sounding callers" no matter what they have to say. (Maybe they're worried that old people can still remember a time when radio stations carried something other than rantings from right-wing gasbags.)