W3C Web Content Accessibility Guidelines (WCAG) 2.0
The World Wide Web Consortium, an organization devoted to improving the interoperability of the Web, has released a new version of its Web-accessibility guidelines. The guidelines are meant to help Web designers build sites that can be read and understood by people with disabilities as diverse as blindness, hearing impairments, physical impairments, and even cognitive disabilities like short-term memory impairment or seizure disorders.
American Sign Language Browser
Michigan State University's ASL Browser web site is an online American Sign Language (ASL) browser where you can look up video of thousands of ASL signs and learn interesting things about them.