Using social media to market your business: the basics. Social media are internet services that let you interact with others and share and create content through online communities. Social media present great marketing opportunities for businesses of all sizes. You can use social media to: 1  promote the name of your brand and business. 2  tell customers about your goods and services. 3  find out what customers think of your business. 4  attract new customers. 5  build stronger relationships with existing customers.