There is an interesting THATCamp happening at Carlton Universities ResCommons.   

THATCamp stands for “The Humanities and Technology Camp.” It is an unconference: an open, inexpensive meeting where humanists and technologists of all skill levels learn and build together in sessions proposed on the spot. 

The theme this year is accessibility - check it out at: 
http://accessibility2012.thatcamp.org/contact/

I am techno accessibility junky so I may go myself!