@Mr.ShinyandNew安宇 Stack Overflow have identified three purposes for chat, and one is socializing. They consider it helpful for community building, as long as it doesn't interfere with the purpose of the site. So if a chtroom is 80% collaboration, 20% socialization, that is probably fine. I wonder if trying to create a social ghetto (this room) will simply result in it getting closed because it's 20% collaboration, 80% socialization instead of the other way around.