Folksonomy is the process of using digital content tags for categorization or annotation. It is a classification system determined by everyday people. It allows users to classify websites, pictures, documents and other forms of data so that content may be easily categorized and located by users. Folksonomy is also known as social tagging, collaborative tagging, social classification and social bookmarking. This article also focus on “social, tags, users, content” in terms of folksonomy.