This second-generation MUD is the predecessor to Dyvic Innovation, Inc's next VIC, still in development. I had my eyes opened to the possibilities of MOO for the disabled when I used Grassroots MOO as a site for coaching at a distance. The sophistication of this MOO belies the fact that most of the wizards there are impaired in some way. This experience made me more sensitive to the issue of accessibility to websites.
Few sites bother to put a ramp for the disabled to their front door.
The way you handle these issues can make or break your distance ed program. Feel free to contact me if you'd like to discuss these issues further.