It’s all over the news, and it’s not looking good for Facebook and the researchers behind a newly published study. In case you haven’t heard, Facebook has teamed up with a group of researchers and manipulated the emotions of almost 700,000 of you during a week in January 2012 (http://www.pnas.org/content/111/24/8788.full). The paper describes the occurrence of ‘emotional contagion’ where people exposed to more positive posts on their news feeds post more positive things themselves and vice versa for sad posts. However this shouldn’t come as a surprise. I’m not saying the results are unsurprising, I’m saying that Facebook has manipulated your newsfeed to get an emotional response, and you shouldn’t be surprised.