Big Data is the term used to identify the set of technological solutions that allows the fast processing of a big amount of diverse data that only became possible with the technological advances that have occurred in recent decades. One of the features that gained strength and improvements through these types of technologies are the recommendation systems. The objective of these kind of systems is to offer suggestions of content that might interest the users. This content can be some news, a product, a personal contact, a movie, a song or any other kind of information. This dissertation addresses the study of the perception of the users relative to recommendation systems, especially for television content (programs, series and movies). For this purpose, questionnaires, focus groups, context analysis and case studies were used. Through these methods and techniques it was possible to identify the different factors that influences how the functionality is perceived and how the services are used. Further, it discusses the consequences of the excessive use of personalized content, privacy, ethical and social issues, psychological impacts and the responsibility of the digital products designer. In conclusion, some recommendations are made regarding the development of this type of system so that it achieves its purposes and provides a more satisfying user experience.