Quoth from the message:
The best practice technique for hiding text is not to set it not to
display, but to move it off screen with something like:
position: absolute; left: -999em;
I respectfully disagree about said technique being a "best practice"
but it is a technique is that many people smarter than me champion.
It feels like a hack to me, but maybe I just need to think about it
more.
It's deffinitely a hack, and what's worse, it's just one more thing
to confuse sighted users of jaws who will hear even more text than
they can find on the screen.