2010-07-27 google & yahoo 10.07.28 http://www.google.co.jp/search?hl=ja&rlz=1G1GGLQ_JAJP260&q=google+yahoo&aq=1&aqi=g4g-r6&aql=&oq=google+Y&gs_rfai=http://www.google.co.jp/search?hl=ja&rlz=1G1GGLQ_JAJP260&q=google+yahoo+msn&aq=1e&aqi=g-e8g1g-e1&aql=&oq=google+yahoo&gs_rfai= http://jp.wsj.com/IT/node_85708 http://jp.reuters.com/article/topNews/idJPJAPAN-16459520100727