http://www.sistina.com/
http://itpro.nikkeibp.co.jp/free/ITPro/USNEWS/20031219/2/index.shtml
http://slashdot.jp/article.pl?sid=03/12/22/0826229
http://slashdot.jp/article.pl?sid=04/06/28/2056221&topic=107&mode=nested