I found a Youtube channel called Night Mind
recently that seems to primarily be about documenting and making sense of various internet phenomena. Video series like Marble Hornets, forum sagas, Alternate Reality Games, hoaxes and unsolved mysteries all seem to show up, but the channel does go into more contemporary works of horror.
I just find this breed of story to be utterly fascinating, like Creepypasta from reality.
I'm sure a bunch of us know about the Adult Swim Infomercials, like Unedited Footage of a Bear and This House Has People In It. The writer, Alan Resnick, has a lesser known work, a Youtube channel called Alantutorial. Night Minds breakdown of Alantutorial was what introduced me to these. It is honestly one of the most messed up and fascinating things I've seen.
I've kind of fallen down this rabbit hole for the past day or so. It's my new SCP at the moment. I just wanted to share the channel and the Alantutorial video in particular. It's lengthy, as are the two follow up videos, but they really do deserve a full watch with headphones and the lights out.