In this Oct. 10, 2011 file photo, a magnifying glass is posed over a monitor displaying a Facebook page in Munich. (AP Photo, Joerg Koch, File)

Facebook Is Using Those New “Like” Emojis To Keep Tabs On Your Emotions

If Facebook’s goal is to change your behavior, they need to know your psychological response to photos and videos the same way the tobacco industry needs to know people’s brain chemistry when choosing additives in cigarettes.

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