Qiankun Zhao is a research scientist at AOL Labs China since June 2007. Before that, he did his postdoc and PhD study at Penn State University and Nanyang Technology University, respectively. He was involved in the ChemXSeer project, and the Libra project in Microsoft Research Asia. His research interests include: web search (personalization, collaborative search, and vertical search), social network (blog analysis, finance analysis, information propagation, and advertisement), and mobile search (location based search, dynamic update, small display, and energy optimization).