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- ソーシャル名刺「Poken」日本上陸--対面のプロフィール交換を簡単に
--  http://japan.cnet.com/news/tech/story/0,2000056025,20389924,00.htm
- 友達が欲しい人大募集！
--  http://www.tomodachi-tsukurou.com/
- SNS3強の歴史を振り返り、未来を想像してみた(改訂版) 
--  http://urarara.blogspot.com/2009/03/sns3.html