It's a little complex, but not really. It's depth-N secret-hiding; if you have a true secret that absolutely must be hidden, you hide a disk full of anime at th

It's a little complex, but not really. It's depth-N secret-hiding; if you have a true secret that absolutely must be hidden, you hide a disk full of anime at the top level, a smaller disk of furry porn below that, and a hundred pages of terrible erotic fiction below that, as your "deepest darkest secret". And now you have a "good" justification for using a PDDB to keep your shame hidden, and the layer below _that_ holding the corporate secrets you're trying to auction off can't be proven in any reasonable way (from the disk. I'm sure it's obvious by this point that I'm no expert on corporate espionage, but there are plenty of other ways you'll get caught). I mean, if you're not the kind of person that would use something like this anyway, then people will always _suspect_ you have something deeper in there (even if you don't). But they won't be able to prove it - that's the goal.