Link to article by Buhalis

Buhalis D & Law R (2008) ‘Progress in information technology and tourism management: 20 years on and 10 years after the Internet - The state of eTourism research’ Tourism Management Vol 29, Iss 4, August 2008, pp 609-623

This paper reviews the published articles on eTourism in the past 20 years. Using a wide variety of sources, mainly in the tourism literature, this paper comprehensively reviews and analyses prior studies in the context of Internet applications to tourism. The paper also projects future developments in eTourism and demonstrates critical changes that will influence the tourism industry structure. A major contribution of this paper is its overview of the research and development efforts that have been endeavoured in the field, and the challenges that tourism researchers are, and will be, facing.

You will find this article very useful in gaining an overall perspective of the state of eTourism research.

The paper can be found here .