The document discusses how mobile marketing can be used in various industries like retail, restaurants, ice cream shops, classified advertising, and politics. It provides examples of mobile marketing campaigns run by companies like IKEA, Church's Chicken, Friendly's Ice Cream, car classified sites, and Barack Obama's 2008 presidential campaign. The key benefits of mobile marketing highlighted are its ability to capture customers immediately, engage customers through contests/surveys, and drive customers to stores or websites.