Found this great favelet at Juicy Studio where you can examine how a table and see the hidden stuff as summary, headers and abbreviation etc.
Here is an normal table

Here is the table after clicked the favelet

Just drag the favelet to your favorites, go to page that has an table, click the favelet to see the hidden content. Great when developing complex tables.
Also, if you have not already looked at Fangs discussed in the article, please try it out, it is great extension emulating JAWS, the screen reader.
An example of the Fangs extension.

You can also add voice to this extension with another one called Foxy voice.
And to get an voice just mark the text and choose FoxyVoice.

After trying Opera 8 with speech I was so impressed I tried to get Foxy Voice working. I haven’t been successful with Firefox 1.0.3 Any tricks you used or did it just install cleanly?
It works fine with the latest version. You can find it here:
http://foxyvoice.kenche.info/modules/news/article.php?storyid=3