隨著以使用者社群為基礎的Web 2.0網路應用風潮，圖書資訊界也相當關心其發展，其中以通俗分類（Folksonomy）的應用最受矚目。本文簡介Web 2.0與通俗分類之意涵與發展，並針對其於資訊組織與資訊檢索的可能應用與影響提出討論。此外，也嘗試探究圖書資訊專業人員在面對此趨勢，所應具備的新思維。

With the trend of user-community-based Web 2.0 applications, the circle related to library information have great concern about the development of the trend. Among the variety of applications, Folksonomy shows much potential in library information services. This paper first introduces the respective definition and development of Web 2.0 and Folksonomy. Next, the study further discusses their implications in areas of information organization and information retrieval. Finally, future roles of librarianship in accordance with the new trend are also explored.