Electronic commerce, commonly known as e-commerce, eCommerce or e-comm, consists of the buying and selling of products or services over electronic systems such as the Internet and other computer networks. It is more than just buying and selling products online. It also includes the entire online process of developing, marketing, selling, delivering, servicing and paying for products and services. (Definition by Wikipedia) Now a days majority of people are relying on E-Commerce sites to sell or buy anything. Here are most famous and useful e Commerce sites, you may be searching for.