Will it help to understand the importance of reference in the e-commerce business? When I decided to go somewhere, had only one intention. I wanted to give my convenience for existing customers in my shop online. I thought I could place an order online and get delivery on time. Because they know that the quality of my product or service, not have to work on strengthening ties with them. They know how reliable it is my business. If this is the whole scenario, so why should I use SEO? I help you impress existing customers?