With a giant finger wag, Simpleweb (a Web design agency in the UK) claims that 75% of local web design companies have inaccessible sites. It sounds like they used the W3C's validator to check for well-formed markup and used other online accessibility validators to confirm compliance with accessibility guidelines. If they simply took the automated results of the accessibility checkers, that could explain the high percentage of failure. Automated tools can be poor judges of accessibility. They can be used to identify areas that need further evaluation, but are not the final judge and jury. I hope Simpleweb was not too quick to accuse.
