Gong Yoo If I share my personal life on SNS, I will gain something but also lose something. I try not to reveal my private life. Yoo Jae Suk If I start SNS, I might spend the whole day on it without doing anything. So I won't start at all. Song Joongki I'm not good at technology. I don't use SNS because I don't know how. Park Bo Young I'm actually not a thoughtful person, that's why I don't use SNS. I don't trust myself. I'm quite emotional and short-tempered, so I stay off of it. Instead, I write a diary. Kang Dong Won I don't have any store to share. I don't like talking to strangers. Everybody has a different personality. I don't understand how SNS is a form of communication. Park Hae Jin I could promote and communicate on SNS but I believe that it'll do more harm than good. A lot of scandals happen on SNS. That's why I stay off of it. Kim Hee Won I don't like getting my private life exposed. Also, I don't have stories