Messaging services, such as Slack, are becoming increasingly popular in the workplace.
Messaging services, such as Slack, are becoming increasingly popular in the workplace. - 
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The way many of us talk – in the office to our co-workers at least – is evolving, thanks in large part to a three-year-old San Francisco-based company called Slack. The team messaging app has four million users and is a bit of a tech world darling. Now the big guns are muscling in on the space. Facebook’s Workplace went live last month, and this week Microsoft Teams is launching. Should Slack be worried?

Follow Dan Gorenstein at @dmgorenstein