I watched this Vid the other day, and the traces show that there is up to three times the amount of power comming out of it than going in.
I know that CLaNzeR is making a replication of the technology so will be keeping an eye on that.
I am 100 % convinced that Steorn are not trying to conn anyone and they beleive in the technology, so if what they have is true then this is going to be very interesting.