There is (used to be?) an XKCD IRC channel with a bot that only lets you send messages that have never been uttered in the channel before. https://blog.xkcd.co

There is (used to be?) an XKCD IRC channel with a bot that only lets you send messages that have never been uttered in the channel before. https://blog.xkcd.com/2008/01/14/robot9000-and-xkcd-signal-attacking-noise-in-chat/ https://blog.xkcd.com/2008/01/14/robot9000-and-xkcd-signal-a...