Thanks to social networks the world learns Video hosting"YouTube" officials actively use social media for attraction of additional attention. For example, the prime minister Shinzo Abe at the closing ceremony of 2016 Summer Olympics appeared in the Super Mario's suit, the known character of popular video game. The deputy mayor of the city Yuzawa read a rap to advertize the city, and the governor Tottori used Pokemon Go for involvement of tourists in the local museum …