I stopped using Facebook a while ago for this reason. Family, personal, and professional are better off separate. Incidentally, at every family event I go to now I'm asked if my sister is a lesbian because "she is in a relationship with a girl on facebook, she must be a lesbian". My dad got several calls from relatives asking.
Bottom line is I dont want status updates from many people. And if I do, I want it to be so important that they'll call and tell me.