The Japanese portal / search engine goo, have gone live with their Shindig-based OpenSocial container. See example user page, goo labs site, developer’s kitchen and documentation (in Japanese). See also announcement from Eiji Kitamura on the shindig (Apache opensocial) list.
Via Rajdeep Dua on shindig-dev, “Shindig : An Architectural Overview ( PHP Version)”
Shindig is the Apache-incubated project to build an opensource implementation of the Google-and-friends OpenSocial platform for gadgety social networking. Most activity on the list is around the Java version, but a PHP effort/port is also underway.
This article follows the earlier “Architectural Overview of Shindig , an OpenSocial Reference Implementation“; both are based on work-in-progress code from Shindig svn.
One part that caught me eye was this handy (if inaccessible) overview of the schemas:
Figure 7 provides the details of various classes which represent and store the social graph on the client side for OpenSocial APIs.