You would have to have been living under a rock not to have heard about the 'New Media' or 'Social Media' and how many businesses are using this platform to market their products and services online. Here are 100 of the most important concepts to grasp to make sure this platform works for you and your business? Just so we are on the same page, here is my definition of Social Media. Social Media is any online platform where people can have conversations and create relationships with other people. Social Media Marketing is when you leverage those relationships to market your products and service.