This document discusses ambush marketing, which is when a company promotes itself in association with a major event without being an official sponsor. It provides examples of how ambush marketing is done through advertising, merchandise, and sponsoring related entities. While it increases brand awareness without high sponsorship costs, ambush marketing decreases the commercial value of events and creates an unhealthy competitive environment. The document also outlines career prospects for those with ambush marketing skills in fields like social media marketing and market research.