Discussing personal information such as salaries or a recent divorce is not done between people who do not know each other well. Compliments on clothing or hair are acceptable; however, you should never say something (good or bad) about a person's body. Negative comments about another person not involved in the conversation are also not acceptable: when you do not know a person well you cannot be sure who their friends are. You do not talk about private issues either, because you do not know if you can trust the other person with your secrets or personal information. Also, it is not safe to discuss subjects that society deems controversial such as religion or politics. Lastly, it is not wise to continue talking about an issue that the other person does not seem comfortable with or interested in.