Accessibility is an important goal for any Content Management System that aims to support as many users as possible. There is a lot to learn to meet not only the legal guidelines for web accessibility but also the vision that guides such legislation.
In mojoPortal I have gone to significant efforts to make everything accessible from the back end site administration to public facing features. I am committed to learning as much as I can about the issues and the recommended solutions for those issues as possible in order to continually improve mojoPortal and make it more accessible.
I am a member of The Guild of Accessible Web Designers
See my profile on gawds.org
For developers interested in techniques for accessible design, I'm starting a list of resources. If you know of good links to helpful resources let me know.