Channel4 is a website for anonymous discussion on a variety of topics. The site is hosted by "LulzSec", a collective of computer hackers, pedophiles, criminals and assorted others who are all involved in internet security.

They're involved, in the most obvious of ways, in the creation and sale of child pornography, which isn't exactly the safest stuff.

And in the most hidden corners of the internet, child rape (or "crimes" as it is known) is being perpetrated with shocking regularity.

The BBC reports that police have found several videos that show girls being gang-raped by multiple men.

And they're only beginning to crack it down on the internet.