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The global buildup of Internet connectivity and growing availability of inexpensive computing and communication devices have made the World Wide Web a virtual continent that is borderless. Anyone in the world with a computer and Internet access can now explore, join, build, or abandon any Web community at any time. This new freedom is often attributed to the "Web 2.0 era" of services and applications that let webizens easily share opinions and resources. Consequently, users can collectively contribute to a Web presence and generate massive content behind their virtual collaboration.
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Kwei-Jay Lin (2007) studied this question.
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