404. That’s an error.

The requested URL /bookmarks/mark?op=add&bkmk=http%3A%2F%2Fwww.yamatsuri.net%2Fblog%2Fstaffblog%2F%3Fp%3D56925&title=%E9%AE%8E%E3%82%92%E6%B1%82%E3%82%81%E3%81%A6in%E7%90%83%E7%A3%A8%E5%B7%9D was not found on this server. That’s all we know.