Word spread via social networking sites, including Facebook, Myspace, private blogs, public forums, personal websites, as well as by word of mouth, text messaging, and email. Participating cities included Atlanta, Beirut, Boston, Budapest, Chicago, Copenhagen, Cracow, Dublin, Houston, Huntsville, London, Los Angeles, Melbourne, New York City, Paris, Pécs, Shanghai, Stockholm, Sydney, Székesfehérvár, Szombathely, Vancouver, Warsaw, Washington, D.C., and Zurich.