Social media marketing involves using social media platforms to market a business and engage with customers. It allows companies to interact with potential customers, improve their online visibility, get feedback, and manage their online reputation. While it requires effort and an open mindset, there are many possibilities like corporate blogging, using RSS feeds, creating microsites and games, guerrilla marketing tactics, and engaging on professional and social networking sites, Google Maps, and video/photo sharing sites. The key is to create engaging content and measure the results of social media marketing efforts.