It's funny that Slack thinks they've perfectly balanced a unique and special snowflake on the tip of a unicorn's horn when what they've really done is added a pretty UI to IRC. It's a chat room. With channels. So, sorry to tell you guys, but it's not innovative, it's lucky. We had chat rooms back in 1995. Yes, that scrappy startup Microsoft will not have too much trouble implementing a chat room and they don't need l…
And they didn't even add it, Metalab did. http://metalab.co/projects/slack/