Marketing techniques are disclosed that allow companies to efficiently identify target businesses to solicit for purchase of advertising products. One embodiment includes a map-based interface for selecting a neighborhood and locating any businesses known to a company selling advertising products in that area, with the intent of allowing a company representative to select a set of those businesses to contact regarding the company's advertising products. The map displays business listings as markers on the map, with color-coding used to indicate listings the representative has already contacted, and listings that some other representative has contacted.