The End of the Echo Chamber

Bakshy?s study involves a simple experiment. Normally, when one of your friends shares a link on Facebook, the site uses an algorithm known as EdgeRank to determine whether or not the link is displayed in your feed. In Bakshy?s experiment, conducted over seven weeks in the late summer of 2010, a small fraction of such shared links were randomly censored?that is, if a friend shared a link that EdgeRank determined you should see, it was sometimes not displayed in your feed. Randomly blocking links allowed Bakshy to create two different populations on Facebook. In one group, someone would see a link posted by a friend and decide to either share or ignore it. People in the second group would not receive the link?but if they?d seen it somewhere else beyond Facebook, these people might decide to share that same link of their own accord.

Source: http://feeds.slate.com/click.phdo?i=917dec62b9ba92fce2e5bd539973ab3f

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