Tweet, Tweet, Chat
I watched the Twitter video and read the articles but I do have concerns about the distractions that this can cause in a person's professional life. I may see if some of the others that I work with closely want to try UMChat for a while to see what happens. Keeping the train of thought going when you're on a complex project does not need one more thing to interrupt it. I know that my daughter does a lot of messaging but I have not been thrilled.
Give me a phone!