Everyone has a warn meter, but but only you can see yours. Only I can see mine, etc.
If you break the rules to often, or continuesly be rude to other people, then your warn level will increase and a red square will be filled in. I think if you get to 100% warn, then you are suspended.
If you play nice, then you don't have to worry about anything. I hope that makes sense to you.
k: