My name is Jim, I'm part of a multiple system that's also autistic, and I use text for pretty much everything. Like livejournal and AIM have been way way useful things for being able to say what's on my mind and communicate with other people, and when I'm hanging out with friends, I mostly use this communication device thing. I call it "text-to-text" because it's kinda like text-to-speech without the speech bit. What I do is just set up my laptop or netbook at a place in the room where everybody can see it, then open up a notepad document with big enough text so people can see, then plug in a wireless USB keyboard and take the keyboard with me, so wherever I am in the room I can just type and what I'm saying shows up over on the screen and everybody can read it. It works pretty good and I'm happy with it, like I'd like to try text-to-speech sometimes but this seems faster and I think maybe I'd get distracted by computer voice stuff, and anyway it looks like a lot of the good software for that stuff is way expensive and all I needed for this was to go pick up a $20 wireless keyboard. The only annoying thing is when people don't see that I'm typing and so they don't look over at the screen to read it. I've said before I need to go get a little bell to ding or something so I can get people's attention. :P
I'm practicing a lot at trying to learn how to talk better but I still mostly sound like I'm dying or something and can't express myself good. I think even if I can get it so I learn how to talk more, text is always gonna be a really big part of my life.