Usability benefits

The following is a list of sites and articles we hope you will find useful when trying to convince management or your clients about the value of usability.

Title Author / Company Comment
The $300 Million Button Jared Spool Interesting story discussing how a relatively small investment in user experience led to an additional $300 million in annual sales.
The ROI of User Experience Dr. Susan Weinschenk Excellent animated video summarising the benefits and return on investment (ROI) of user experience design.
The business case for usability UsabilityNet The business case for usability - includes lots of great examples.
Usability ROI Declining, But Still Strong Jakob Nielsen From Jakob Nielsen's Alertbox. Mentions that the average business metrics improvement after redesign is now 83%. 
Cost & Return on Investment Good overview on how to measure ROI.
Usability Is Next to Profitability BusinessWeek Online News article about the importance of usability.
The cost of poor website performance SmartBear Excellent infographic on the cost of poor website performance - good inverse argument for ROI.
ROI Calculators Human Factors International 6 Usability ROI calculators.