Thanks for all the replies. You know the funny thing is, the web site was actually a company trying to sell this design as an induction heater, not just someone talking about it. I was nearly 100% certain that it had to be resistive.
I would love to turn my vessel into a resistive heater...
I have been researching induction heating as of late and last week I found a site that showed a metal tube with two AC leads going to it (one at each end). The voltage was stepped down to something reasonable so that someone touching it when there is the hopefully unlikely grounding/neutral...
