The infamous 'Dark Web', if you didn't know by now, is a seedy online underbelly where people can browse all manner of nefarious content under a cloak of near-total anonymity.
By using an alternative browser and downloading privacy software, the Dark Web provides eBay-esque drug marketplaces and other illegal enterprises.
And a lot of it's pretty grim.
A Reddit thread asked Dark Web users to recount their worst experiences while browsing under the surface:
"Alleged gunrunners selling firearms in Europe, even the UK where it's near impossible to gain licences for anything other than sports/rural shotguns and rifles. They were typically less than £1000, and looked to be mainly East European of design (but I am no expert)."
"Pretty insane quantities of drugs for sale. No idea if it was legit in the slightest but it purported to offer many kilograms of very hard drugs like heroin, cocaine, etc."
"Probably the weirdest shit I've seen on the deep web was a medical services advertisement. They claimed to have a few warehouses full of people in different countries and in different conditions (ranging from homeless people kidnapped in NYC to slaves bought in third world countries).
"For whatever sum of money you could supposedly have whatever immoral medical experiments run on people. They also had some papers on some of the work they've been doing. Mostly it seemed to be how much of a substance would be required to kill someone or to cause a spontaneous abortion.
"The most interesting things I've found though are websites that basically help you change your identity completely.
"For example for $6,000-$10,000 you can get an american ID, passport, driving licence and all the paperwork done so you can move to America under a name you desire.
"Also there was an interesting PDF with easily 1000 pages written by ex-inmates about how to survive in prison , how to get drugs in and out of prisons, gangs etc."
"I played around with Tor closer to when the feds were taking down all the best known onion sites. I did manage to see some anarchist blog type thing. Just a lot of random images of violence to terrorist propaganda. It wasn't that the imagery was scary, but it was just unsettling and had the desired chaotic/anarchic feel to it."
"I'm not sure if this was real, but someone had a guide on how to turn a person into a living sex doll that couldn't communicate.
"It had to do with severed vocal chords, limbs, and replacing the teeth with silicone dental dams. The author claimed to have kidnapped multiple women which he subjected to such vile acts."