資訊分享是資訊行為中的一環，也是人們相當自然且普遍的一種行為，所代表的意義為個人將所獲取的資訊傳遞給他人的過程，因此資訊分享是一種資訊的獲取與分享，然而有時人們所獲取之資訊可能為預期外之資訊進而分享給有需要的人，讓資訊偶遇於資訊分享中扮演重要角色。現今網路的普及除了帶動虛擬社群的發展，也增加了資訊分享的機會。本文作者回顧圖資領域相關文獻發現資訊分享的相關研究仍在發展當中，許多期刊文獻與博碩士論文的研究大多數是針對不同族群或情境的方向進行，資訊分享的研究較為少數，因此本研究希望透過不同學科領域文獻的閱讀整合，對於虛擬社群的資訊分享能有更進一步的了解與認識。文獻分析的結果可知虛擬社群依據不同的角度探討可區分為多種類型的社群，然而擁有共同的興趣與目的仍是將成員聚集在一起分享的最主要因素。此外，虛擬社群成員的互動是社群發展的重要關鍵，不同類型的成員因其特質會有不一樣的分享動機和模式。

Information sharing is a natural and common behavior, which happens when a person passes on information he/she finds to others and/or exchanges information with others. Information sharing can occur when receiving information that is expected or unexpected. The Internet has helped the
development of virtual communities, which increases greatly the opportunities for information sharing.When reviewing related literature in the field of Library and Information Science, the authors found
that research studies on information behavior are developing steadily, yet with more emphasis on different client groups and contexts, few are focused on information sharing. This paper aims to review and synthesize literature with an interdisciplinary nature to increase the understanding of information sharing in the virtual community. Based on the analysis of the literature, virtual communities can be categorized into various types; common interests and goals is the most important factor for members
to stay in and contribute to the community. Also, vibrant interaction among the virtual community is critical to the development of the virtual community.