What's the proper etiquette when writing on someone's wall? What shouldn't you write? Do you have to respond if someone writes on your wall? How quickly? Let's answer all the possible questions for how to properly conduct ones self on a wall. * What are you allowed to say on someone's wall? * Writing on your own wall * "Happy Birthday" Posts * If someone writes on your wall, do you have to respond? * How long should you wait before responding on someone's wall? * Writing on someone's wall after becoming "friends" with them * Editing the posts on your wall