Hopefully this test works and doesn't end up spamming a bunch of folks with messages from channelbot.
Right now, channelbot only responds with a basic test message. But I think the logic is all there for various combinations of responses. I'll have channelbot introduce itself in a second. But with the way it's set up, if I mention it in a top-level post, it only replies privately. So I will mention it in a comment.
