Consistency is one of the most powerful usability principles: when things always behave the same, users don't have to worry about what will happen. I….

A general principle for all user interface design is to go through all of your design elements and remove them one at a time..

The system should always keep users informed about what is going on, through appropriate feedback within reasonable time..

Users are not designers..

Usability rules the web. Simply stated, if the customer can't find a product, then he or she will not buy it..

...pay attention to what users do, not what they say..

On average, when you ask someone to perform a task on a site, they cannot do it. It's not their fault; it's the designer's fault..

Minimize the user's memory load by making objects, actions, and options visible. The user should not have to remember information from one part of th….

On the Web, usability is a necessary condition for survival. If a website is difficult to use, people leave. If the homepage fails to clearly state w….

Windows '98 is so similar to Windows '95 because Apple hasn't invented anything worth copying since 1995..

Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information….

If your users have many questions, it's a failure of your primary site design. It becomes not so much customer support, as much as customer complaint….

On the Web, all advantages are temporary, and you must keep innovating to stay ahead.

People have to want to change before there's any chance of helping them do so..

The best Web sites are better than Reality..

At most project meetings, everyone has a seat at the table except the poor victims who will have to operate the technology..

The usability tests we have conducted during the last year have shown an increasing reluctance among users to accept innovations in Web design. The p….

Developing fewer features allows you to conserve development resources and spend more time refining those features that users really need. Fewer feat….

Inadequate use of usability engineering methods in software development projects have been estimated to cost the US economy about $30 billion per yea….

...the book is a manifesto to make the Web atone for the sins of computers and regain a level of simplicity that can put humanity at peace with its t….

Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone con….