Is Slack, unprofitable w&#x2F; $30MM yearly revenue[1], really worth almost as much as Twitter, unprofitable w&#x2F; almost $2BN yearly revenue? That&#x27;s a lot of growth to account for.<p>[1] <a href="http:&#x2F;&#x2F;www.businessinsider.com&#x2F;slack-expects-30-million-revenue-2015-7" rel="nofollow">http:&#x2F;&#x2F;www.businessinsider.com&#x2F;slack-expects-30-million-reve...</a>