Reminds me of the good old days with Powwow. I've seen this idea come and go (and even wrote my own version), but I've found that although this kind of letter-by-letter communication is literally 3-5x more efficient, only a small percentage of users choose efficiency at the cost of displaying their poor typing and spelling skills.<p>About efficiency, if you think I'm exaggerating, imagine for a moment that phone calls didn't exist, but that every phone conversation required recording and sending a voice mail. Imagine how ridiculously slow and inefficient that would be. Well, that's instant messaging, the most inefficient method of communication ever devised. Millions of users stare at their Slack chats, waiting for "So and so is typing" for minutes, until finally So and So just gives up and ends up writing nothing at all. ;)