I don't know how posts get to be called "vanity posts". If someone shares a joke and makes another person have a moment of laughter in what may otherwise be a day, how is that vanity? If someone struggling to come up something different for dinner tonight sees a recipe they can use, how is that vanity? Sometimes it only takes a few words, maybe someone else's words, to brighten a day. I think quotes cover a vast area of subject matter and you never know when someone may be helped or inspired by a quote. How is that vanity? I call it sharing, spreading some humor, entertainment, education etc., but not vanity.