Use common sense.
No begging, no spamming, no swearing, no spoiling, no advertising without permission.
You should also refrain from posting links and keep the chat civil. Being very vulgar or offensive will not be tolerated.
Remember. You can use "ignore" feature to mute other users, should you find them annoying.
To do that, use the red gear button next to the user you want to add to your ignore list.
You can also report an user and exact message you're reporting him for. Our moderators will review it and react accordingly.
Additionally, please check if you're in the correct chat room and that you're using the language appropriate for the room you're using.