A List Apart: Articles: The Accessibility Hat Trick: Getting Abbreviations Right: "First Goal: Standards
Our first goal is compliance with XHTML 2.0. In version 2, the acronym element has been deprecated, so we’re now using the abbr element for all shortened forms."
Is this really such a good idea given:
"JAWS and initialisms
CSS2 has defined properties for screen-reading software that are meant to help separate abbreviations that should be spoken as whole words from those that should be spoken as initials."
There are plenty of different types of abbreviation surely structural markup is the best place for them, not presentational css. If we wish to markup BBC as an initialism surely the markup would be the place to do it - not CSS.