To be honest, the "deep web" just sounds like the internet back in the late 90's and early 2000's. Before the internet was commercialized for the sake of profit.
Any of you remember "3 guys, 1 hammer"? That shit was real, but you can't find it anywhere online anymore. As an experiment to see how the internet has changed over the years, I've unintentionally deprived myself of it for about 2 years. When I came back, Google doesn't find you shit you want to actually find, it's impossible to actually find anything "real", and you (as an internet user) are forced to huddle together in boards that peak your interests (in this case skateboarding. fuck a heel bruise).
Before, the internet was technically "free" in general. The idea that there is now this "separate entity" that has all this fact and fiction shit is lame. That stuff used to just be "the internet".
Also, anyone who has seen Law and Order: SVU can determine that that shit about child rape instructions on the "hidden wiki" is just some FBI ploy to nab random internet users for experimentation in Warehouse 4.