If someone writes on your wall, are you obligated to respond? Edit this page and add your thoughts. * The simplest answer is "absolutely!" If they ask you a question, then certainly respond. If they make some witty comment, then you should make some witty comment back. In general one should always respond to a wall post. If it is witty banter then you should carry on the same witty banter, unless the person is just making a statement and there is nothing to respond to.