Social media websites are considered as a source of enhancing social interaction among youth. This study has been conducted to explore how social media websites are being used by the university youth. Two hypothesis are made one deals with self-presentation and second deals with social interaction. Since, Facebook is the most commonly used social media website among youth so it was selected to test the hypothesis. Survey method is used to collect the data. Descriptive stats and statistical test have been applied. According to the results majority of people use Facebook for one hour per day and majority of the users use this website for self-presentation.