Have you ever experienced the 'deep web'?

Recently one of my friends was explaining to me that the internet was like an iceberg, and we only see the tip of the iceberg… most of the content on the internet doesn’t show up on the regular internet and you have to use a browser called Tor to access the rest of it.

I tried it and came across a directory of popular websites on the deep web. Theres a lot of sick porn readily available, but just reading the name of the links was enough to know that I’d never ever want to click it. You can all find out tips on how to steal, order fake documents, hire hitmen etc…

Other than that, there is a lot of weird an wonderful stuff that can be found on there. There is a lot of information that the governments don’t want you to see. Wikileaks articles.
Plans for attacks by the group ‘Anonymous’ that can be an interesting read, lots of other interesting stuff apparently.

So, has anyone here ever delved this far down the internet rabbit hole? And could you recommend any sites or articles that are interesting?