About once a week or so, for perhaps a couple months, I've been contacted by a Coho bot. For a few weeks, I thought that it was just spam, but when I learned what it was, I was intrigued. It would be a cool social experiment, but it's irritating because it provides absolutely no explanation of what it is. Since I suspect many of the people connected are similarly irritated because they never opted in or know what it is, I think that the project is a waste of time. If it was explained in each initiation, or if it was only comprised of users who opt in, it might be cool. I just learned how to opt out. If you want to opt out, just type $optout as a response.