This morning, you might have checked your Facebook account. According to StatisticBrain.com, over 1.7 billion people in the world have a Facebook account they log into at least monthly, so you’re certainly not alone.
While you’re logged into Facebook, you might come across a page you decide to like so that those updates show up in your news feed. Now let’s say one of your friends posted a meme you find amusing — so you like that as well. As you travel around the Facebook world, you leave a trail of likes. But did you know that trail is followed by big data companies, government agencies, and researchers? One researcher designed a way to know things about you, information that not even your spouse may know about you.
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