Since the World Wide Web became widely available in the mid 1990s, Web-based applications have developed rapidly. The Web has come to be used by a range of people for many different purposes, including online banking, e-commerce, distance education, social networking, data sharing, collaborating on team projects, and healthcare-related activities. Effective user interactions are required for a Web site to accomplish its specific goals, which is necessary for an organization to receive a proper return on investment or other desired outcomes. Several handbooks exist that describe work in the fields of human factors and human-computer interaction, but they are not specific to Web design. Although several books on Web design are available,.