Road Shows, Rural Area Marketing, Mall Activity, On Door Promotion, Bike Road Show, School/College Activity, In Shop Promotion, Wall Painting, Shop Merchandising. Below-the-line advertising is an advertising strategy in which a product is promoted in mediums other than radio, television, billboards, print, and film. Types of below-the-line advertising commonly include direct mail campaigns, trade shows, and catalogs, and targeted search engine marketing.