I've recently visited Chat, specifically the Stack Overflow Lobby, however, I was unfamiliar with the rules and expectations of the chat room. Does the Lobby follow the same rules as Stack Overflow and I must ask Programming/Software engineering questions, or is it more open? Can I ask about Stack Overflow itself, or other sites in the network? Are there different rules there that don't exist in the Q&A area of the site? Are there a definitive set of rules?