1. Be accepting of what and who others are and choose to be. Some things, people can't chance, and some things, they don't want to change. Respect that.
2. No bullying. If someone wants to be left alone, or if they don't want to talk to you/about something, let that go. Respect peoples' space and requests.
3. Stay PG-13, please! You never know how people feel about certain topics, and even if you ask everyone how they feel about something, they might not want to tell the truth, due to the origin of their reaction/opinion.
4. Please no politics or religion, to reduce the risks of arguments! I don't think any of us are coming here looking for a fight, so let's avoid starting one as much as possible.
5. Respect others' opinions. If someone else is interested in something that you don't enjoy, just don't join that conversation. If you're talking with someone and another person randomly joins in just for the purpose of disagreeing, politely ask them to leave, or just ignore them. Everyone deserves respect.