Looks like this started out as a newsletter ($34/year) and became a companion vendor site. Newsletter may be worth subscribing to.
They are MSP locals and run an annual conference, which, unfortunately, we just missed:
Closing The Gap's annual international conference, Computer Technology in Special Education and Rehabilitation, is held each fall in Minneapolis, MN, exploring the many ways that technology is being used to enhance the lives of people with special needs. The 23rd Annual Conference will be held October 20-22, 2005.