Two annoying bugs were taken care of by Laurent and one more is going to be fixed soon.
Bug 678376 - Ungroupped contact should be displayed at the bottom of the roster
Bug fixed by making ungroupped contacts being displayed at the bottom of the roster
Bug 678156 - People nearby group
Bug fixed by re-implementing the People Nearby group feature
Bug 678875 - empathy-nautilus-sendto should use RosterView
Bug is going to be fixed by porting empathy-nautilus-sendto plugin to use a RosterView instead of a EmpathyContactChooser