Great marketing is all about ROI. While a carefully planned, scientifically optimized online marketing campaign can earn two, three, or even four times what it costs, it’s rarely as profitable as a quirky and eye-catching guerrilla marketing campaign. From faux submarines t   o floating lifeboats, we’ve teamed up with Display Wizard to bring you four guerrilla marketing examples that use props and eye-catching images to spread their message when you’re least expecting it. 1. Milans’ Street Submarine It’s easy to sell high fashion and luxury, but selling important yet boring services like insurance can be tough. Italian insurance...