HEre's a good one...customer who's house I've done a lot of work in is selling. He called me and asked me why I didn't ground any of his receptacles. Home inspector told him there wasn't one outlet in the house that was grounded yet they all had ground wires and ground wires were present at the panel. I stopped over and checked them out with my $6 plug in recp tester and everything is fine. Only thing I can think is this "inspector" had a broken led on his tester. I don't know why people selling/buying put so much faith in these so called experts.