I’ll go first: r/kitty. One of the hundred grillion cat subs back on Reddit, the culture in this one was you posted a cat picture, and the only word allowed in the title or in any comments or replies was “Kitty.”
Someone is using that subreddit for covert communications, I just know it. Either on the level of “if u/PM_me_your_nostrils posts an orange cat, we attack at dawn!” or there’s some steganography going on with the pictures, but that subreddit was too stupid to be as active as it was.
Personal reddit conspiracy theory as to why image hosting is on site:
My theory is that 3 resulted in imgur hitting up reddit and threatening to block the site if they didn’t reign in fatpeoplehate. Reddit did, by 4, because the alternative was no images and that would absolutely fuck reddit up. This in turn leads to 5 to prevent that powerplay again.
Probable. And Reddit didn’t want to do so initially because, of many reasons, this way they also offload the liability on Imgur.