I taught a workshop over the summer, an information architecture workshop. And one of the participants brought up the question about the relationship of information architecture and accessibility. It's really tempting to just dive straight into architecting and designing and building something without really stopping to consciously think, not everybody's going to use this thing in the way that I do. So really, from the very first moment you start planning whatever it is you're going to build, thinking about how people are going to use it,. what they need is a really good start.