Wal-Mart Buys Social Media Firm Kosmix

http://dealbook.nytimes.com/2011/04/19/wal-mart-buys-social-media-site-kosmix/

參考來源： http://dealbook.nytimes.com/2011/04/19/wal-mart-buys-social-media-site-kosmix/ (在「Google 網頁註解」中檢視)