gsignond : Online Accounts Sign-on glib daemon ( https://launchpad.net/gsignond )
libgsignon-glib : GLib-based client library for applications handling account authentication ( https://launchpad.net/libgsignon-glib )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a elementary
For Paludis use this rsync : rsync://gentoo.zugaina.org/elementary-portage
If you have a problem : ycarus(-at-)zugaina.org