The Decentralized Structure of Collective Attention on the Web

Background : The collective browsing behavior of users gives rise to a flow network transporting attention between websites. By analyzing the structure of this network we uncovered a non-trivial scaling regularity concerning the impact of websites. Methodology: We constructed three clickstreams networks, whose nodes were websites and edges were formed by the users switching between sites. We developed an indicator Ci as a measure of the impact of site i and investigated its correlation with the traffic of the site (Ai) both on the three networks and across the language communities within the networks. Conclusions : We found that the impact of websites increased slower than their traffic. Specifically, there existed a relationship Ci ∼ Ai (γ < 1). We suggested that this scaling relationship characterized the decentralized structure of the clickstream circulation: the World Wide Web is a system that favors small sites in reassigning the collective attention of users.