TANSTAAFL!

So these folks claimed to have invented a perpetual motion machine. And they invited the scientific world to validate their claims! Heck, they even were going to have a demo! Free energy! Rejoice!

Huh. It seems that the machine did not work in the demo "...due to excessive heat from the lighting in the main display area..."

Riiiiiiggggghhhhhtttttttt....

Folks, I suggest strongly that you keep your hands on your wallets.

Some commentary here and here.