Loads of people will be taken-in by that kind of rubbish though.
Gold plated power cables and other nonsence.
Earthing a sound system by hooking an earth rod up to the side of an RCA port would possibily just introduce interference.
Btw.. speaking of earthing...
I noticed in the USA that many appliences that would be earthed in Europe wern't over there.
E.g. Irons, toasters etc... all seemed to have 2 pin moulded plugs.
Seems unusual for appliences with large metal surfaces.