Start-up Rypple brings social networking tools to human resources departments, upending practices like the often-dreaded annual performance reviews.

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Does social networking have to invade every aspect of human life?

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In-person interviews offer rare networking opportunities, where face-to-face contact can allow candidates to make a human bond that can lead to other things.

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One could argue that social networking, at least at its core level, is a healthy activity: it contains human interaction, thoughtfulness and even a splash of compassion.

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But these human to human connections seem to be losing some of their currency in an era where so much of our social networking has moved online.

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