Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.

Information Overload = "information pollution"

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

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

What we learned is money doesn't grow on trees.

The web is the ultimate customer-empowering environment. He or she who clicks the mouse gets to decide everything. It is so easy to go elsewhere; all the competitors in the world are but a mouseclick away.

The best Web sites are better than Reality.