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Since users already track professional contacts and trade information with them on LinkedIn, it's not a stretch to create private versions of those tools limited to employees of a specific company.
This is not a new strategy: Weiner revealed a similar internal test last summer to Fortune. And he mused about the idea in 2011 as well.
So it's clear that LinkedIn is moving very deliberately—okay, slowly—with testing these private-sharing products.
LinkedIn's line of business products is currently built around tools for recruiters. It recently started rolling out Sales Navigator, a tool to help salespeople find and develop leads.
If there's any reason for LinkedIn's caution, it's most likely that selling and marketing a new collaboration tool to a broad set of customers would be a challenge.
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