Well I don't think many paintings are talked about as "having shaped the painting world/art". They are just some nice pictures or whatever. Sure - some pieces

Well I don't think many paintings are talked about as "having shaped the painting world/art". They are just some nice pictures or whatever. Sure - some pieces have shaped art - like first real use of perspective, or that one with the weird stretched skull etc (can't remember names, sorry). Those were pioneers that changed how artists and people thought about and created art. That is what I am wondering about - what happened there first that is now ubiquitous across the internet or changed how people do things from that point onwards? I don't feel like just being popular at the time really changed anything of note. Things like digg and early Reddit for example did introduce some new things like the social voting of stories (although I am sure they were not necessarily pioneers there but helped popularise it). Likewise YouTube made video sharing and consumption super trivial. Wikipedia, Google maps, Facebook, Flickr. Those introduced/popularized ways that shaped how people use (and built) the internet ... SA and 4chan were/are just popular forums and as far as I can tell (just like any of the other popular forums) were popular in their niche but haven't generated anything of note on how people use the internet apart from a few threads or memes that you only know about if you know about them - e.g. what happened on SA that my grandmother now does when using the internet today? Does my grandmother know about a particular thread about 9/11 or some random Donal trump meme on there? Of course not - but she does use slippy-maps (google maps) and social media (Facebook) and instant in-browser online video (YouTube), online photo galleries (Flickr) I'm not saying they didn't introduce anything noteworthy, I am just wondering what it was they did because I can't work what is different from any other popular forum?