Well the latest on advertising is that two startups have developed electronic billboards with tiny cameras that garner information about passers-by, such as their gender, approximate age, and time spent viewing the billboard. So if the person standing in front of the display is a middle-aged white woman, for example, the display can change to show an ad appropriate to her. Such billboards are currently being tested in cities nationwide. The companies say they have no plans to store the images their cameras pick up, but privacy advocates and consumers are concerned about what they perceive to be street side surveillance. Read more….