Well it was one of those odd threads that would bounce from "hey, hot girls" to discussions of different concepts of attraction and beauty depending on culture and location around the world.
Sometimes it was joking, sometimes it got scarily serious, sometimes it got outright pervy, and a chunk of it was just running humour that was part and parcel of the "regulars" twisted psychology.
I thought it was just cleaned out in part because some people pushed the limits, and Obsidian decided to tidy the boards somewhat right before a big release and they were expecting fresh people to swarm the boards (who might not understand the locals and the banter right off the bat).