Opening Communication A social network lets you inform friends or followers of secret sales or special offers quickly and simply. It also allows customers to contact you easily. If a customer has an issue, she can post on your wall or write a short message explaining the problem. This allows you to respond quickly and attempt to ameliorate the situation. Customers also can post positive experiences with your company on your page, which is one of the best types of advertising. You also can use the site to ask your customers what they like and dislike about your company or about the world in general.