Each of the assigned articles are insightful. Although I have spent some time thinking about accessibility of websites, these sites provided some clues and suggestions on how to accommodate users with different disabilities.
Human Factors was a great way to hear how all of those websites that use a billion tables are really annoying to those who use screen readers.
The UK government site was also pretty enlightening on how various users with disabilities would view the demonstration site. Although I found the original site pretty hard to use even in the non-diabled mode.