The word I picked is "voyeurism". When I first heard this word, it reminded me of my favorite game I played in my childhood – Hide & Seek. As a hider, I enjoyed the excitement when seeker searching around me, while as a seeker, I got a sense of achievement when I found someone successfully. You may think such games just belong to kids, but actually, we still played this game in the adults' world and it has a new name called “voyeurism”. Today almost everyone is a “Peeping Tom”: we keep watch on others’ lives through their Facebook and Instagram. Meanwhile, we are also peeped by others: the surveillance system makes us nowhere to hide.