I'm adding microdata for a forum where we have People who all have a username, and also, optionally, a real name (family and given). I'm a bit stumped about what to use for name. Right now, I'm using the real name if they have one, and the username if they don't, but mixing data like that is pretty icky. Alternatively, I could always use username for the name, and then use familyName and givenName for the Real name, when available, but I don't know that saying that a person's name is their username is really the right approach either. Any thoughts?