“Promotional Clock” – Cooperation Between the Biggest Polish Cities on Facebook
02.04.201413:10
The biggest Polish cities such as Szczecin, Rzeszów, Białystok, Lublin, Łódź, Poznań, Kraków, Warszawa, Katowice and Bydgoszcz, which collaborate within the Union of Polish Metropolises, are starting joint promotional activities on Facebook.