Jakob Nielsen’s current Alertbox column: Low-Literacy Users has implications for users with disabilities and a host of others as well. More:
Long experience shows that improving usability for users with disabilities typically increases usability for non-disabled users as well. Similarly, improving websites for lower-literacy users can also help higher-literacy users. That said, some sites are targeted mainly at higher-literacy users:
* B2B sites that target business professionals, managers, and decision-makers
* E-commerce sites that sell expensive or intellectual products
* The public relations and investor relations areas of corporate sites
* Content sites that cover scientific or other advanced topics
* Intranets for knowledge workers