Hmmm I've been thinking which topics will always be trendy in whatever platform. For example- ghosts Like even now there are so many yt videos on haunted houses/places....and it's still interesting.
I don’t think ghost are a thing. But the things that people interpret as ghosts can be interesting, i.e. the ghost frequency (18.98 Hz) or the ideomotor effect for ouija boards. Spoiler: Ouija board debunk video