Although there is no special rule written, elgringo14, Akiba-Online is for Asian material only, at least it must be Asian releated, so the posts in the hentai anime (and dto. DDL) section are o.k., as this is Asian material (in a U.S. subbed / dubbed release though). Mods are deleting all material which is of no Asian origin or has no close releationship, as for ex the MMG U.S. releases of Love Ninja or Mania - secret of green tentacle, to stay inside hentai section. A U.S. porn with Asia Carrera is no Asian porn too and will be deleted, although her parents or grandparents may be of Asian origin...
Main country of interest of course is Japan, then there are Korea, China, Taiwan, Thailand, maybe India perhaps too, but that´s it - normally that what you would perhaps call "far east".
