Social bookmarking systems attract
researchers in information systems and social sciences because they offer an
enormous quantity of user-generated annotations that reveal the interests of
millions of people. In this paper, we explore a different viewpoint to gain an understanding
of the social bookmarking systems.
Using data crawled
from a large social tagging system we argue that
the prominence of a website, as measured by its status or public recognition,
also determines its centrality.
To test this hypothesis we predict the indexes of authority and other measures
of centrality via Social Network Analysis. We also use Gephi to visualize the
networks, and analyze the structure.
The results discussed in the paper
come from a sample of 61,043 taggings that involved 3,668 users and 4,913 bookmarked
websites from a specific Social Network Sites, Delicious, on the subject of globalization of agriculture.
We find that mass media companies
have a competitive advantage in attracting links and user attention.
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