As I notified on this mailinglist late March, one of the biggest
japanese portal site "goo" has been
offering japanese gadget developers an opportunity to develop
OpenSocial gadget on our SNS
goo Home's sandbox.
But last week, we've officially released an update to goo Home to
adopt OpenSocial gadget container
functionality to end users.
Since goo Home is a public SNS, you may view my profile page without
logging in (though all are written
in japanese). Please see gadgets working.