about:config entry:
name: social.manifest.http://mixedpuppy.github.com
value: {"location":"http://mixedpuppy.github.com/socialapi-demo/manifest.json","name":"Demo Social Provider","iconURL":"http://mixedpuppy.github.com/socialapi-demo/icon.png","workerURL":"http://mixedpuppy.github.com/socialapi-demo/worker.js","sidebarURL":"http://mixedpuppy.github.com/socialapi-demo/sidebar.htm","origin":"http://mixedpuppy.github.com","enabled":true,"last_modified":1341340548668}