Accessibility
http://www.webaim.org/
WebAIM has provided comprehensive Web accessibility solutions since 1999. These years of experience have made WebAIM one of the leading providers of Web accessibility expertise internationally.
http://www.accessifyforum.com/
Discussion of the development of these forums, particularly in making them accessible.
http://www.uiaccess.com/
UIAccess.com is a resource for universal interface design and usable accessibility information.
http://www.accessify.com/
Accessify.com - all the tools, links and resources you'll ever need to make your web site accessible.
http://joeclark.org/
I do consulting and research on accessibility – mostly topics like captioning, audio description, and Web accessibility. My writing includes hundreds of articles, one book (more on the way), and a personal Weblog.
http://www.diveintoaccessibility.org/
The first question is "Why should I make my web site more accessible?" If you do not have a web site, this book is not for you. The second question is "How can I make my web site more accessible?" If you are not convinced by the first answer, you will not be interested in the second.