Internet World Daily News: Nielsen on Usability: Is Usability Really Worth Anything? - 05/01/01 Usability also helps with services that users will pay for. Field research can identify needs that are so important to a person's work or life that a service that meets these needs will offer great value. User-centered design can produce solutions to the needs that are easy to learn and efficient to use and thus unlock the full potential of the service. And traditional Web usability can ensure that a service is described and promoted in such a way that people can understand it and will sign up for it.