This weekend there was a meeting of the Dutch Wikimedia chapter. What made it special was the presence of Blueknight, he is deaf and he brought an interpreter in order to follow the proceedings. As you know I blog about such things .. http://ultimategerardm.blogspot.com/2010/06/chapter-meeting-of-wikimedia-nederland.html
I asked him if he was aware of SignWriting, I told him about the wish for Wikipedias in SignWriting and, that SignWriting is not only for research but also to send a birthday card, to make a shopping list. I think he is interested, he said that he would ask around and come back to me.