Analysis of User Web Traffic with A Focus on Search Activities Feng Qiu, Zhenyu Liu, and Junghoo Cho   View Paper (PDF)   Return to Poster Papers Abstract Although search engines are playing an increasingly important role in users' Web access, our understanding is still limited regarding the magnitude of search-engine influence. For example, how many times do people start browsing the Web from a search engine? How much percentage of Web traffic is incurred as a result of search? To what extent does a search engine like Google extend the scope of Websites that users can reach? To study these issues, in this paper we analyze a real Web access trace collected over a period of two and half months from the UCLA Computer Science Department. Our study indicates that search engines influence about 13.6% of the users' Web traffic directly and indirectly. In addition, our study provides realistic estimates for certain key parameters used for Web modelling. ©2006 Association for Computing Machinery