Establishing and developing relationships with customers is an important and inseparable part of marketing management. This effort should be relevant to the target group of customers, and it should be interesting in order to get the appropriate customer response. This paper presents a case study based on the principles of content analysis, pointing to a specific example of an unconventional approach to building customer relationships which is based on the personification of a product – chocolate biscuit called Fidorka, produced by company Mondelez International. The case study analyses a marketing communication campaign in an online environment, specifically by means of a special microsite and profiles on Facebook, YouTube and Instagram.