A folksonomy is a system of classification derived from the practice and method of collaboratively creating and managing tags to annotate and categorize content. T his practice is also known as collaborative tagging, social classification, social indexing, and social tagging. Folksonomy is a blend of folk and taxonomy.
Folksonomies became popular on the web in 2004 as part of social software applications such as social bookmarking and photograph annotation. Tagging, which is characteristic of Web 2.0 services, allows users to collectively classify and find information. Some websites include tag clouds as a way to visualize tags in a folksonomy.
Tagging is a wonderful way to help students organize their notes and their thoughts by forcing them to think about classifications, important ideas and structure. Here is an article that will give you more information.
Shayne Train, Education, Educational Technology, Computer Literacy, Web Tools