الفهرس 
Research design
Literature reviewOnly 14 pages are availabe for public view
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Abstract
In recent years through the help of the Internet, businesses of all industries are now able to reach their existing and potential customers on an international scale through advertisements in various forms such as blogs, emails, instant messaging, web forums and social networks. The Internet is becoming one of the more favorable and important sources of retrieving travel information (Zhang et al., 2009). The Internet disseminates an immense amount of info online, holding more advantage as a medium of communication as compared to printed media. Given that the reliance of travelers on search engines to find out about travel information is increasing, electronic word-of-mouth certainly has changed the structure and accessibility of travel information. It has become possible for consumers to know the opinions of strangers who have tested the product or service. This has also brought subsequent change in the knowledge and perception of various tourism products in the travelers itself (Litvin et al., 2006).This change in travel planning happens more so with the evolution of Web 2.0 (Cheung & Thadani, 2010).
The large-scaled, interactive disposition of the Internet provides an opportunity for travelers to share other people’s experiences and get recommendations for travel products or services (Zhang et al., 2009). Thus, reading comments from other users who have experience the product or service is reachable. The Web 2.0 phenomenon also creates networks of people with similar needs and interests for consumption activity through web forums and online
communities (Middleton et al., 2009).
As a new network of communication, the Internet is also becoming more essential in evaluating the product or service, creating impacts on the decisions of the consumers to make provision and acquisition of tourism products or services (Zhang et al., 2009).
The concept of viral marketing via Internet is considered as a modern concept in the field of marketing research and marketing studies as well as executing marketing functions. The emergency of this concept is based on using spoken word in executing marketing function depending on Internet and communication with individuals’ sites. With people increasingly using the internet and mobile devices more than trusting and paying attention to traditional advertisers and marketers adopt more innovative tactics to target their audiences , and viral marketing is one of them (Stephansen, 2009).