http://internet.watch.impress.co.jp/cda/news/2007/11/06/17415.html
http://internet.watch.impress.co.jp/cda/news/2007/11/13/17495.html
http://itpro.nikkeibp.co.jp/article/NEWS/20071113/286961/
http://japan.cnet.com/mobile/story/0,3800078151,20360369,00.htm
http://www.itmedia.co.jp/news/articles/0711/06/news064.html
http://www.itmedia.co.jp/enterprise/articles/0711/06/news054.html