OK, so it's hitting seawater with radio waves (article calls this radio-frequencies, and it's a little hard to see what they're referring to with their mangled science. I suspect it's in the higher energy part of the spectrum than radio, as they are too low energy to break most chemical bonds, including the O-H bond), releasing hydrogen, and then igniting it.
And this is what I find odd about the articles on this process. Not a single one of them go into the process after the ignition. This is pretty darned important. It is entirely conceivable that this process could work to excite water molecules to the extent that the bonds holding the hydrogen and oxegen seperate. Microwaves excite water molecules to produce heat. Maybe there is indeed another frequency (perhaps something especially harmonic?) in the electromagnetic spectrum that somehow encourages the molecular bonds to break. The hydrogen could then, when out of the range of the emf, resume its normal propensity to match up with any oxegen in proximity to form water, particularly when its of sufficient energy (temperature) to bind with any oxegen around, thus 'burning'.
It's certainly interesting, but its not free energy, and not entirely unheard. Separating water molecules into hydrogen and oxegen, and igniting the results is a fundamental bit of chemistry that can be reproduced in a variety of ways, no problem.
The question is: Is this a relatively efficient process when compared to other existing means of producing useful energy i.e. heat, kinetic motion, electricity, etc...?
It is not a question of whether you get more energy out of it than what you put into it. The would violate the Laws of Thermodynamics (and be very, very cool). It is a question of whether the percentage of returned usefuly energy is sufficiently large when compared to other forms of deriving similar useful energy, in this case heat. There are a lot of things to take into consideration from that standpoint. *shrug* There might be something here. Producing emf waves of most kinds is a relatively straightforward process for us these days. This guy could produce the right frequency using a generator at home!
So calculate the energy it is taking you to produce your desired frequencies for the required amount of time. Measure the temperature of the hydrogen flame. Knowing the well-established energies required to separate and form the water molecules, do some math, and get the efficiency. Shouldn't take very long.
About it being salt water, it might be that the emf is actually causing electric current to run through the water. If the current is of sufficient strength, it will cause the water molecules to break their bonds to form hydrogen and oxegen. Everybody knows that salt water is much more conductive than pure water. And there are other solutes that cause water to be even more conductive. It's something to be looked at, but I rather think that this story will disappear once those efficiency tests are performed and the results confirmed.
