Accessibility is becoming more and more important the closer we get to 2010 and the Euopean directives which are supposed to govern the way in which sites are made accessible to the public as a whole, including disabled people.
However we aren't just talking about people with disablilities, we're talking about different browsers, operating systems and devices - accessibility!
As one of my specialities, accessibility is not only the Why? and How? but also knowing how to achieve that with a thorough understanding of CSS and HTML.