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Http://www.cnbeta.com/modules.php?name=news&file=article&sid=5637
A few days ago, Google played Gmail, Microsoft now follows G Mail, compatible with MSN.com and Hotmail.com's mailbox.
Google engages a social software named ORKUT and then acquired Blogger.com to play Blog.
Microsoft can't sit down, come to a two-in-one, launch Wallop, integrated blog, SNS, and can share pictures, music with friends!
And also learned from Google, only those invited can be used.