Why is Web Usability Important?
Research by User Interface Engineering, Inc., shows that people cannot find the information they seek on Web sites about 60% of the time. This can lead to wasted time, reduced productivity, increased frustration, and loss of repeat visits.
A usable site greatly improves users' satisfaction, ability to learn and remember the site content and organization; it reduces errors, and leads to more effective and efficient user activity.
Usability is not the only important aspect of the site. Content, functionality and a website's popularity contribute even more to the success of a site. However, if users can do the same thing with two different sites, they will choose the one that is more effective, efficient and satisfactory.
Last but not least, many usability issues are also related to accessibility. In general, a usable web site is also more accessible. Disabled users (including those using low-bandwidth technology like cellular phones, PDAs, black and white screens, speaking browsers via telephones, screen readers) are not excluded from using it.