Because of my never-ending fascination with random and obscure locations for advertising, I keep my eye open for stories such as the one in an August issue of Advertising Age which detailed the announcement by Kroger Stores that it was testing the placement of ads on the conveyor belts in its grocery stores. The technology is patented by EnVision Marketing and allows for printing digital, photo-quality images directly onto the belts. At a cost of $182,800, an advertiser can lock up the entire 55-store footprint for one year to capture a projected 3.3 million impressions a month.