Sometimes, you can take a great and insightful idea or discovery and distil it to it's simplest form, and it tells a great story. Other times, in distilling it down to a simple form (often a newspaper headline), it becomes something different.
A story that's currently going through the "report, recycle, repeat" process of what we call "news" is the story about how your brain can't handle all your Facebook friends; any more than 150 "friends" is just a meaningless figure, because our brains can't handle that many.
That's the short version of the story: OMG: Brains can't handle our Facebook friends.
A slightly longer version (less headline-friendly) would explain that Robin Dunbar came up with a theory some years ago, based on observations of social units of primates and the relationship between the size of the social groups and a particular area of the brain, concluding that the human brain is suited to groups no bigger than 150 people. Later this year, he plans to publish the results of some newer research which will show that social networks like Facebook don't affect this number; even if you have 1,500 friends, an analysis of traffic shows that you maintain the same inner circle of about 150 people.
Two big questions come to my mind about those findings. Firstly, how does something like Facebook change those relationships? My own Facebook friends who post regular updates get more of my attention, and I know more about what's happening in their lives than those who post less frequently. Some who post incessantly will get ignored or even "defriended." Then there are the friends who either aren't using Facebook, or aren't very active— who miss updates, event invitations and other activity that's happening on the site. I simply can't believe that Facebook hasn't changed the way that friendships— even within those inner circles of 150— are functioning.
But a different spin on the same story (and I think a more interesting one) is that the fact that our brains "can't handle it" is the point.
This is a snippet- read the full post.