>>200
Sorry, I meant anonymous BBS'[e]s.
http://www.yotsubasociety.org/node/2
Ignore the talk on imagereddits, but the very kind of BBS (at least the concept) we're using now was made by Japanese people.
Shii is a famous ``meme'' from Japanese textboards too, Shii (the person) took his name possibly from that ``meme'', and you probably know what's the software running this BBS called.
Also, read this:
http://ayashiiworldhistory.blogspot.com/2012/10/test.html
The part where it says "Shift-JIS", read that.
Summing up, there's absolutely no reason to think /jp/ made this. /jp/ didn't invent Touhou, /jp/ didn't invent SJIS art, /jp/ didn't invent 2ch.