Here is a prototype for a blockchain-enabled big-data artificial intelligence that can determine the quality of a post:

const isCancerous = (post) => post.includes(🤣😂😉)

The science behind it:
If you find this particular combination of emojis in a post or image (image recognition will be implemented after the next investment round) then there's a very high (99.9 - repeating, of course) chance that the image is a seriously unfunny repost from Facebook, 9gag, or straight up a forwarded email from OP's grandma.

Stay vigilant, downvote shitty content.

PS: We're in the process of investigating whether certain combinations of nationalities and age groups run an increased risk of shitposting sexist memes but due to the sensitive nature of the subject we will have to thread carefully. For now all we have to say about that is: send bobs and vegana. Thank you.

This message sponsored by The DevRant People's Liberation Army.