Thanks for calling http://egotastic.in.net/ egotastic The U.S. Internet company joined Japan's SoftBank Corp in backing Alibaba Group Holding Ltd's planned partnership structure. Yahoo, which owns24 percent of Alibaba, stands to reap huge windfalls from an IPOas Alibaba's market valuation would add billions of dollars tothe two companies' assets. Yahoo is also keen to sell part ofits stake.