Zeszyt naukowy - całość - Wydział ZarzÄ dzania i Ekonomiki Usług

98Michał Rudnickipact on the demand. It presents the turnover in this market data based on two industryleaders such as Groupon and Gruper. The study uses the results of research conductedby the PBI Sp. z o. o. and research made by Gemius Internet Standard and the reportsprovided by the GoDealla group buying aggregator. Apart from the above analysis,there are also presented the raw data collected in studies conducted by the author ontourist services placed on the websites of the group buying portals.Translated by Michał Rudnicki