Overview of User Experience Design Concepts
http://designingux.com/2008/07/overview-of-user-experience-design-concepts/

Designing User Experience
2008

Abstract:

User experience design has become an essential consideration in the development of websites and technical communications. No longer can we throw together a few headings and numbered lists in CSS and XHTML and hope the result will be worthwhile and meaningful to users. As the web expands and content becomes more accessible, it is necessary to take content and websites to the next level - to provide information that is not just useful or even usable, but enjoyable. If a person has to spend more than a few seconds trying to find what they need they are that much more likely to “Google it” and find a site or help system that provides the answer quicker.