In the past decade, blogging web sites have become more sophisticated andinfluential than ever. Much of this sophistication and influence follows fromtheir network organization. Blogging social networks (BSNs) allow individualbloggers to form contact lists, subscribe to other blogs, comment on blogposts, declare interests, and participate in collective blogs. Thus, a BSN is abimodal venue, where users can engage in publishing (post) as well as in social(make friends) activities. In this paper, we study the co-evolution of bothactivities. We observed a significant positive correlation between blogging andsocializing. In addition, we identified a number of user archetypes thatcorrespond to "mainly bloggers," "mainly socializers," etc. We analyzed a BSNat the level of individual posts and changes in contact lists and at the levelof trajectories in the friendship-publishing space. Both approaches producedconsistent results: the majority of BSN users are passive readers; publishingis the dominant active behavior in a BSN; and social activities complementblogging, rather than compete with it.
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