Detlev Fischer leads the development of the BITV test, a tool sponsored by the German Government and widely used to evaluate the accessibility of websites (follow bitvtest on Twitter). His stuff unrelated to accessibility can be found at oturn.net.
Contributions by Detlev Fischer
Web developers interested in accessibility issues often look to WAI-ARIA to bridge the accessibility gap created by ubiquitous scripting and make web applications more accessible to blind and visually impaired users. But can we recommend WAI-ARIA without reservation? Are there times when appropriate semantic HTML elements are preferable to custom widgets?