WSDM 2008 -- List of accepted papers ==================================== Anindya Ghose and Sha Yang. An Empirical Analysis of Sponsored Search Performance in Search Engine Advertising Ba-Quy Vuong, Ee-Peng Lim, Aixin Sun, Minh-Tam Le, Hady W. Lauw and Kuiyu Chang. On Ranking Controversies in Wikipedia: Models and Evaluation Dikan Xing, Gui-Rong Xue, Qiang Yang and Yong Yu. Deep Classifier: Automatically Categorizing Search Results into Large-scale Hierarchies Dou Shen. Personal Name Classification in Web Queries Eugene Agichtein, Carlos Castillo, Debora Donato, Aristides Gionis and Gilad Mishne. Finding High-Quality Content in Social Media Fernando Mourao, Leonardo Rocha, Renata Araújo, Thierson Couto, Marcos Goncalves and Wagner Meira Jr.. Characterizing and Understanding the Impact of Temporal Evolution on Document Classification Flavio Chierichetti, Silvio Lattanzi, Federico Mari and Alessandro Panconesi. On Placing Skips Optimally In Expectation Greg Buehrer and Kumar Chellapilla. A Scalable Pattern Mining Approach to Web Graph Compression with Communities Jian Huang, Ziming Zhuang, Jia Li and Lee Giles. Collaboration Over Time: Characterizing and Modeling Network Evolution Jonathan Elsas, Vitor Carvalho and Jaime Carbonell. Fast learning of Document Ranking Functions with the Committee Perceptron Lars Backstrom, Ravi Kumar, Cameron Marlow, Jasmine Novak and Andrew Tomkins. Preferential Behavior in Online Groups Mark Meiss, Filippo Menczer, Santo Fortunato, Alessandro Flammini and Alessandro Vespignani. Ranking Web Sites with Real User Traffic Michael Taylor, John Guiver, Stephen Robertson and Tom Minka. SoftRank: Optimising Non-Smooth Rank Metrics Navin Goyal, Yury Lifshits and Hinrich Schütze. Disorder Inequality: A Combinatorial Approach to Nearest Neighbor Search Nick Craswell, Onno Zoeter, Michael Taylor and Bill Ramsey. An Experimental Comparison of Click Position-Bias Models Nitin Agarwal, Huan Liu, Lei Tang and Philip Yu. Identifying the Influential Bloggers Nitin Jindal and Bing Liu. Opinion Spam and Analysis Paul Heymann, Georgia Koutrika and Hector Garcia-Molina. Can Social Bookmarks Improve Web Search? Qiaozhu Mei and Kenneth Church. Entropy of Search Logs: How Hard is Search? With Personalization? With Backoff? Ravi Kumar, Andrew Tomkins and Erik Vee. Connectivity Structure of Bipartite Graphs via the KNC-Plot Ronny Lempel, Ori Ben-Yitzhak, Nadav Golbandi, Nadav Har'El, Sivan Yogev, Dafna Sheinwald, Benjamin Sznajder, Shila Ofek-Koifman, Eugene Shekita and Andreas Neumann. Beyond Basic Faceted Search Sandeep Pandey and Christopher Olston. Crawl Ordering by Search Impact Xiaowen Ding, Bing Liu and Philip Yu. A Holistic Lexicon-Based Approach to Opinion Mining Yifan Chen, Gui-Rong Xue and Yong Yu. Advertising Keyword Suggestion Based On Concept Hierarchy