Programmer, artist and a GIMP user.
For some reason he always writes this joke phrase on his profile pages: ”おちんちーん”

Japanese name: やまきゅう (Yamakyuu) (Not to be confused with this artist)
Mainly-used nickname/user ID: ycums

See also

• Home page: http://ycums.info/
• Blog: http://blog.ycums.info/
• Pixiv account: http://www.pixiv.net/member.php?id=3300
• Tinami account: http://www.tinami.com/creator/profile/15722
• Drawr account: http://drawr.net/youcharmanums
• Flickr account: http://www.flickr.com/photos/webdiver/
• The other URL: http://www.flickr.com/photos/13238523@N06/
• Tumblr for reblogging: http://ycums.tumblr.com/
• Stickam account: http://www.stickam.jp/profile/ycums
• Privatter account: http://privatter.net/u/ycums
• Twitter account: http://twitter.com/ycums
• Twitpic account: http://twitpic.com/photos/ycums
• Twipple photo images: http://p.twipple.jp/user/ycums
• Google plus account: http://plus.google.com/106275272604672728660
• Sourceforge account: http://sourceforge.jp/users/youcharmanums/
• Iddy profile (dead): http://iddy.jp/profile/ycums/
• Old blog (1) (dead): http://youcharmanums.blog2.fc2.com/
• Old blog (2)(empty): http://ggggimp.blog112.fc2.com/
• Pixa account (dead): http://www.pixa.cc/profiles/show/3165
• Youtube account (suspended): http://www.youtube.com/profile?user=youcharmanums
• Old google plus account (deleted): http://plus.google.com/116261201026014829131
• Yfrog images (dead): http://twitter.yfrog.com/user/ycums/photos
• The Interviews account (dead): http://theinterviews.jp/ycums