newtley writes in with a story from Ad Age a few days back. "Advertisers are determined to get into your head by one means or another, and Holosonic Research Labs has found yet another way of invading your privacy in the name of forcing you pay attention. You're walking down a street in New York when all of a sudden, a woman's voice whispers 'Who's that? Who's There?' No, you weren't having a psychotic episode; you were being subjected without your permission to 'sound in a narrow beam, just like light.' It was coming at you from a rooftop speaker seven stories up."