拜blogchina所赐http://tech.blogchina.com/special_topic/ss/2005-03-24/1111635795.html刚在校友录吹水，建议更新校友录为email+wealink(公用地址簿）+Google Groups+blog,·Social Networking Systems like wallop yahoo360 orkut is not concerned here,cause not that necessary for the time being,其实是本人对SNS还不是很熟现在，没有认真想这种可能性
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