NT=neurotypical. My understanding, though I might be using the term wrong, is that it is used in amoung asperger communities to refer to those who don't have asperger's. A lot of people in an aspie community like this one are going to be there because someone they care about is aspie, not because they are. They will often identify themselves as NT instead of normal or some other term that maybe less appropriatte or more awkward to other members of this community. For example in my case I am an NT, my daughter is an aspie.