A doujin... I want to say it was called "Azumaneiga", or something to that effect. The whole thing was illustrations of the Azumanga cast in popular movies or video games. Another often posted page was for Episode I: The Phantom Menace. The content was all worksafe, but the cover I recall as skirting 18+, with Chiyo-chan barely covered by spools of film.
I wish I could be more specific, but I can't find it anywhere to back this up...
