I add only that we can demonstrate experimentally what we say about violation of action reaction principle.
In the past years we received a grant for this BY MANY PUBLIC TESTS www.asps.it/Presentazione.wmv
On our opinion only propellantless propulsion (PNN in italian) can colonize moon and mars.
I watched the whole video and it doesn't really talk about experimental demonstrations, for now it's just speculation, to start thinking about it's uses they should probably do more experiments and show something concrete.
Anyway, if it was real it would be nice.