I’ve spent pretty much all day reading as much as possible about the extremely controversial Facebook “emotional contagion” study in which the company intentionally altered its news feed algorithm to see if it could manipulate its users emotions. In case you weren’t aware, Facebook is always altering your news feeds under the assumption that there’s no way they could fill your feed with all of your “friends” pointless, self-absorbed, dull updates (there’s just too much garbage).
As such, Facebook filters your news feed all the time, something which advertisers must find particularly convenient. In any event, the particular alteration under question occurred during one week in January 2012, and the company filled some people’s feeds with positive posts, while others were fed more negative posts.
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