Eva Otaku wrote:In February 1997, an anonymous document circulated through Japanese anime bulletin boards and internet chat rooms. This nearly 40KB text-only document written under the pseudonym "Hiiro Yui", a self-professed "[anime] industry dropout", claimed to expose various behind-the-scenes secrets surrounding the Evangelion TV airing, Director Anno, Okada Toshio (Gainax founding member), and other Gainax/Eva related matters that had thus far circulated only as rumors among industry people and otaku "in the know". This document, which came to be known as the Evangelion kaibunsho*, quickly disappeared from the bulletin boards and chat rooms, but copies had been made and the document was also posted anonymously to several prominent Eva-related websites, so it saw widespread exposure. The "Eva boom" now past, most of these websites no longer exist, and the document can currently be found only at a few forgotten web pages and mirror sites.
Read the rest at Eva Otaku:
http://www.evaotaku.com/html/kaibunsho.html