burpee·12年前·讨论I don't really see how this is worth a 1.12B valuation - even with this amount of users. I also think that the pricing for Slack is over the top.I used Flowdock https://www.flowdock.com/ for about a year for a distributed team, before Slack even existed.From what I can tell Slack is a direct copy of Flowdock from top to bottom in regards to features, while Flowdock charges $3/mo/user.