According to a new survey by Webroot, 81% of companies have done so because such sites as Facebook are too distracting.

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"Timeline aggregates all posts you've ever done into the Timeline, and it basically could have posts that you don't want to be seen aggregated in there for people that shouldn't have seen and will now see them, " said Jacques Erasmus, chief information and security officer at Internet security firm Webroot Inc.

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