A List Apart - This HTML Kills: Thoughts on Web Accessibility by Jim Byrne:

WHEN I STARTED OUT as a web designer, accessibility seemed quite a simple and achievable goal: provide alternative descriptions for all your graphics, and make sure the background colour and text color have good contrast. Accessibility was easy, took little extra work, and the resulting page didn't look different from millions of other first-generation web pages out there, i.e., dull, grey and unattractive.

It ain't easy

Time has moved on and accessibility on the web is no longer simple. From being a largely text-based medium that was easily accessible via a variety of high- and low-tech devices, the web has now become a rich multimedia environment.

Jim is the Director of the Making Connections Unit at Glasgow Caledonian University - just down the road from my workplace. I must arrange to meet him one of these days.