I just read the article on this yesterday. It was /awww, /pics, and /gifs as the first to do this (with I think pics starting it)
Very amusingly, it was first stated that “only sexy pictures of John Oliver would be allowed”, but then it was changed to, “all pictures of John Oliver are allowed, because every picture of John Oliver is sexy”
Edit: I see someone else already mentioned the “all pictures of John Oliver are sexy” bit. Sorry, I just missed it somehow.
As a further edit, here was the original article
I’ve been doing it for so many years across all devices and platforms that I actually get…confused for a second when one slips through. It is normally YouTube that slips through (they seem to be trying new things almost daily to get around any possible ad blocks), but sometimes it is from a major news web site or something. I actually have to look around for a second and then realize what has just happened.