The whole "Rome was built on the backs of shitposters" threads on /his/ and /v/ got me thinking, do we have any other examples of imageboard-esque culture and memes throughout history that are similar to the ones today? It's hilarious and awe-inspiring to see how people from different times and cultures throughout all human existence often had a lot of things in common if you look deep enough.
I sometimes wonder if there was a historical equivalent of baneposting.