This is interesting.
http://simple.wikipedia.org/wiki/Wikipedia:Simple_talk#Point Enabled Pages
This seems to be something worth looking into. My sister goes to a special
school, and I can vouch for the usefulness of these symbols when on printed
media. I have never seen it used online though.
This seems to be a good list to post it to: it's UK based, and would need
meatsphere links. Could someone post this to other lists if required; I
don't follow very many.
Wikimedia UK mailing list