From WikiPedia: Dungeon - A dungeon is a room or cell in which prisoners are held, especially underground. Dungeons are generally associated with medieval castles, though their association with torture probably belongs more to the Renaissance period. An oubliette is a form of dungeon which was accessible only from a hatch in a high ceiling.
There are no second class citizens in a dungeon. Just prisoners. As far as I can see, one is more likely to be trapped in the BRanch dungeon than any other place since you need to be invited and then locked in through your comments. Thanks, but no thanks. As far as our comment section, pretty arrogant on your part to think that our readers and those who are commenting here are second class citizens. They are vital and very important part of our community. Hopefully when running your community, you are going to find that out soon enough.
(Om's remarks come from the comments section to the post listed above.)