Groupon is a popular group-buying website where they act as an intermediary between buyers and sellers. The company has grown rapidly and was established in Sweden in the year of 2010. The aim of this study is to investigate if businesses that have been marketed in Stockholm and that have been co-operating with Groupon have been affected in terms of customer loyalty and profitability. Furthermore the study also examines consumer?s opinions, purchase behavior and loyalty against Groupons business partners.