Yesterday, I released one of many articles that will written about imageboards in general. But this article is more about the grandparents of all imageboard culture: The textboards.
"The Protochannel and the First Channel -- Ayashii World and Amezou World – The Grandparents of the Western Imageboard Culture"
https://docs.google.com/document/d/1peBx3vkdA7Tm5-mhuy-XeQvFgcm_WusD_YoLWO6_KpY/edit?hl=en