newtley writes: "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, 'Who's that?' — whispers a woman's voice. 'Who's There?' No. You weren't having a schizoid episode. You were being subjected to 'sound in a narrow beam, just like light' without your permission. It was coming at you from a rooftop speaker 7 stories up. Don't want to be bombarded by sonic ads? Tough. Wear ear-plugs."