No CMO + listen better = $1 billion company in 2 years. Believe in this.

I wrote about Slack maybe a year ago; at the time, it was essentially a total throw-away post. I had seen something on a business website and decided, "Oh, that sounds interesting." Broadly, these work applications really interest me -- Yammer, Slack, HipChat, even Google/Dropbox -- because if you really think about it, we've been working for years, and…