Google scans everyone’s email for child porn, and it just got a man arrested

Google actively scans the images that pass through Gmail accounts.. "There will of course be some who see it as yet another sign of how the twin Big Brothers of state agencies and corporate behemoths have nothing better to do than delve into the private lives of all and sundry, looking for dirt,"

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Experimental evidence of massive-scale emotional contagion through social networks

We show, via a massive (N = 689,003) experiment on Facebook, that emotional states can be transferred to others via emotional contagion, leading people to experience the same emotions without their awareness. We provide experimental evidence that emotional contagion occurs without direct interaction between people (exposure to a friend expressing an emotion is sufficient), and in the complete absence of nonverbal cues.

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