Ok, I've discusses this selsam business for a bit with DanB and TomW, and the general conclusion seems to be that while mr. Selsam seems to be doing 'interesting' stuff it is in no way as groundbreaking as he claims.
The machine is fairly expensive for the amount of power that it produces, and mr. Selsam pulls a presentation trick in using rotor diameter as the comparision metric all the time where he should be using swept area. His machine is the equivalent of an 18.4' 3 blader 2*sqrt((3.14 * 3.5 * 3.5) * 7), which should comfortably be able to produce the 3 KW or so that the machine would produce when rated at about 25 mph (which is a high wind to rate such a machine in).
This would make mr. Selsams design not so hot, and this, combined with his attitude problems (which I only have as hearsay, but which his site seems to confirm) seem to be detrimental to the factual evaulation of his designs...