I wonder if the real issue is how people learn to use the interface they're given. If there's a steep ramp (notification that says "Something happened. RTFM!"), then no-one will like the contribution made. If there's a walk-through, or guided example use of the notification system, then the adoption will be much higher.
Consider the portal gun in Portal: the first few levels are entirely about learning what the portal gun can do and how to do it. And the story is also structured to ensure that this happens. Therefore there is a need that the user experience teaches the user how to do things. Perhaps a tech demo (possibly of the widgets in the desktop environment toolkit) would be the right place to build a tutorial.