Microsoft Corp. (MSFT) and Alibaba Group, China's biggest e-commerce site, launched search Web site Etao.com to challenge the leading status of Baidu Inc. (BIDU) and Google Inc. (GOOG) in the Chinese market. The launch of the beta, or test, version of the Etao search site (Etao.com) last weekend comes as companies scramble for market share following Google Inc.'s decision to close its China search site March 22. [More]