I think SNS doesn't function as its original purpose nowadays. I used Facebook, but now I don't. At first, it is useful to find friends who I couldn't meet long time and to keep touch with them. But as it became more commercialized, there are so many commercial advertisements that I wasn't able to find my friend's posts. And The posts to just arouse other's interest, not to interact with people, increased in number. That was mostly humor, which people see then just laugh. Proper quantity of humor and advertisements are not bad, but They are exceeded the line now. I hope Facebook recover its communicational function.