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http://critic2.exblog.jp/3118660
http://japan.internet.com/busnews/20060331/6.html
http://www.logitec.co.jp/products/nas/lhdlangv.html
http://k-tai.impress.co.jp/cda/article/news_toppage/28505.html
http://k-tai.impress.co.jp/cda/article/news_toppage/28512.html
http://itpro.nikkeibp.co.jp/article/NEWS/20060330/233820/
http://www.itmedia.co.jp/news/articles/0603/31/news030.html
http://japanese.engadget.com/2006/03/30/megaphone-helmet/
http://enchanting.cside.com/security/spyware.html