Japanese contents only.

• Blog: http://blog.ohgaki.net/
• Wiki: http://wiki.ohgaki.net/
• Work: http://www.es-i.jp/
• Facebook: yohgaki
• Twitter: yohgaki
• LinkedIn: yohgaki
• Mixi: yohgaki
• Skype: yohgaki

You may find me as 'yohgaki' in many services and sites, but it may not me otherwise mentioned here.