I used tweets because they're informal and mention a lot of "what to do" and "how I feel" topics, which I think is very important for basic communication, espec

I used tweets because they're informal and mention a lot of "what to do" and "how I feel" topics, which I think is very important for basic communication, especially for individuals with multiple disabilities. A bonus is that I get a lot of pop-cultural lingo (e.g. "Harry Potter", "Hulk SMASH") that makes my suggestions more fitting for informal communication than plain old dictionary lookups. And you are right about the tacitness of tweets - helps in building a list of common phrases like "on my way to" and "by the way."