Mr. Bin Liu graduated from Tsinghua Univercity and Chinese Academy of Sciences. He withdrew from UMass as Ph.D. Candidate in 2003 and opened Yicha Online Corporation in Beijing. In 2004, Yicha launched the first mobile search engine in China. Yicha is providing mobile search service to more than 45000 mobile sites including QQ.com. Mr. Liu has been doing research in search engine and Web mining area and published about 30 papers on academic journals and conferences such as IEEE, ACM and IFIP.