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Several people buy products that they will never use or even know what for. Feelings associated with pleasure, spontaneity and possession of something are reasons why people buy products without considering if they really need it or not if it will be useful or not, etc.. The collective buying sites are going up and offer products and services with great discounts. This study aims to relate the emotional design and usability concerning to collective buying sites and identify the reasons that influence people when it comes to buy something online.

Usability and the emotional relationships in collective buying sites: a case study