Ahh, e-mail forwards. OK, so this is certainly not from David Copperfield, who is nothing if not exclamation-point-savvy, but it's still creepy, right? Do it a few times and see.
Then highlight the text below for the secret, first sniffed out in the newsroom by editorial assistant Carlotta Olson:
The cards in the second slide have had their suits reversed (hearts>diamonds etc.) from the first slide.