ITmedia
http://www.itmedia.co.jp/news/articles/0810/16/news096.html
http://www.itmedia.co.jp/bizid/articles/0804/08/news003.html
http://www.nicovideo.jp/watch/sm2144545
http://vocaloid.blog120.fc2.com/blog-entry-497.html
http://e0166.blog89.fc2.com/blog-entry-48.html