Feel free to visit my free energy experiments webpage for info,schematics,pics and video of some of my experiments at http://www.geocities.com/altenergy2007/
I didnt see any evidence of free energy anywhere. Like you said, it is a matter of induction. For instance, I could stick two metal electrodes into the ground with some distance in between and get electricity. Free energy? I think not, rather just gaussian currents (I think that is the name for them, it has been a while...).