Overview of Electronic Commerce.E-Marketplaces: Mechanisms, Tools, and Impacts of E-Commerce.Retailing in Electronic Commerce: Products and Services.Online Consumer Behavior, Market Research, and Advertisement.B2B E-Commerce.Innovative EC Systems: From E-Government and E-Learning to C2C E-Commerce and Collaborative Commerce.The Web 2.0 Environment and Social Networks.Mobile Computing and Commerce.E-Commerce Security and Fraud Protection.Electronic Payment Systems, Order Fulfillment, and Other Services.EC Strategy and Implementation: Justification, Globalization, SMEs, and Regulatory and Ethical Issues.