[1] Edge Types - Social Graph API - Google Code ( (2010-09-29 08:14:33 +09:00 版)) http://code.google.com/intl/ja/apis/socialgraph/docs/edges.html

[2] google-sgnodemapper - Google Code (2008-02-10 11:39:45 +09:00 版) http://code.google.com/p/google-sgnodemapper/

With sgnodemapper, all of those would map to sgn://livejournal.com/?ident=brad . And then, from the sgn URL, you can map back to http:// URLs for any known type: content page, profile page, RSS, Atom, etc.