Primates on Facebook

What is the cost of emotion, time and energy do you spend in your social networks “grooming”?
From Feb 26th 2009 | SAN FRANCISCO | The Economist print edition
Even online, the neocortex is the limit That Facebook, Twitter and other online social networks will increase the size of human social groups is an obvious hypothesis, given that they reduce a lot of the friction and cost involved in keeping in touch with other people. Once you join and gather your “friends” online, you can share in their lives as recorded by photographs, “status updates” and other titbits, and, with your permission, they can share in yours. Additional friends are free, so why not say the more the merrier?
In the wild, grooming is time-consuming and here computerisation certainly helps. But keeping track of who to groom—and why—demands quite a bit of mental computation.
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Primates on Facebook