Pavel Shashkin, Alexander Porshnev. Am I Really Happy When I Write "Happy" in My Post?. In Mikhail Yu. Khachay, Natalia Konstantinova, Alexander Panchenko, Radhakrishnan DelhiBabu, Nikita Spirin, Valeri G. Labunets, editors, Supplementary Proceedings of the 4th International Conference on Analysis of Images, Social Networks and Texts (AIST'2015), Yekaterinburg, Russia, April 9-11, 2015. Volume 1452 of CEUR Workshop Proceedings, pages 126-136, CEUR-WS.org, 2015.