I love this idea, and used it recently (very simply) for the cheatsheet I put together for Perch – http://quick.grabaperch.com/
I went back and forth as to whether to include the technique in the new version of CSS Anthology, ultimately deciding not to because of the accessibility concerns you mention. I don’t like to recommend something to a beginner audience that might have a bunch of caveats as to whether it should be used on a particular project. I’m not an accessibility expert though and I’d love to see this technique discussed by those who are.
I love this idea, and used it recently (very simply) for the cheatsheet I put together for Perch – http://quick.grabaperch.com/
I went back and forth as to whether to include the technique in the new version of CSS Anthology, ultimately deciding not to because of the accessibility concerns you mention. I don’t like to recommend something to a beginner audience that might have a bunch of caveats as to whether it should be used on a particular project. I’m not an accessibility expert though and I’d love to see this technique discussed by those who are.