Gaintseva, V.V.GaintsevaSopilko, N.N.Sopilko2017-05-212017-05-212016-12http://ir.nmu.org.ua/handle/123456789/149299enSOCIAL NETWORKS ARE LIKE ADVERTISING BUSINESS OF 21ST CENTURYSOCIAL NETWORKS ARE LIKE ADVERTISING BUSINESS OF 21ST CENTURYArticle