Salesforce announces it’s buying Slack in a $27.7B deal  —  Salesforce, the CRM powerhouse that recently surpassed $20 billion in annual revenue, announced today it is wading deeper into enterprise social by acquiring Slack in a $27.7 billion megadeal.  —  Every worker at every company needs … http://www.techmeme.com/201202/p23#a201202p23