media has become an irreplaceable part for nowadays’ global residents. Mangold and Faulds (2009) believed that “social media” is a wide concept, covering blogs, C2C emails, images, audio, movies, photographs, different forums and boards, and all the online interactive websites (p.358). Until June 2017, Facebook has approximately 22% of users worldwide and 72% of them live in North America (Statista, 2017). Several factors may stimulate the sharp development of social media. One possibility may be that