When someone asked me this question, my answer will be No. This is applicable in pasive or active mode. Facebook is your own aspiration about everything around you. It is one way of expressing yourself in public. Just like in our life once you decide to expose yourself in public you are as well forced to be ready with all the consequences that tag along with it.
So! Why we have to be worried? Unless you have your own social agenda of being exists in facebook then it will be different. For example some people try to gain popularity through facebook, or showing off how popular they can be just like allow the celebrities are doomed for. OTHER than that? Is nothing you own your wall in facebook, you are in charge of your domain there, so once again why we have to worry?
Always remember to be comfortable with yourself first before with the rest of other.